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315117413680 = 2457979075449
BaseRepresentation
bin1001001010111100111…
…01100010010100110000
31010010101002000012201111
410211132131202110300
520130330024214210
6400432443443104
731523621551606
oct4453635422460
91103332005644
10315117413680
11111705623a13
12510a4226494
132393baa75c4
1411374bab876
1582e496788a
hex495e762530

315117413680 has 80 divisors (see below), whose sum is σ = 734510800800. Its totient is φ = 125726939136.

The previous prime is 315117413671. The next prime is 315117413683. The reversal of 315117413680 is 86314711513.

It is a tau number, because it is divible by the number of its divisors (80).

It is a super-2 number, since 2×3151174136802 (a number of 24 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is not an unprimeable number, because it can be changed into a prime (315117413683) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 57827596 + ... + 57833044.

It is an arithmetic number, because the mean of its divisors is an integer number (9181385010).

Almost surely, 2315117413680 is an apocalyptic number.

It is an amenable number.

315117413680 is an abundant number, since it is smaller than the sum of its proper divisors (419393387120).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

315117413680 is a wasteful number, since it uses less digits than its factorization.

315117413680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7166 (or 7160 counting only the distinct ones).

The product of its (nonzero) digits is 60480, while the sum is 40.

The spelling of 315117413680 in words is "three hundred fifteen billion, one hundred seventeen million, four hundred thirteen thousand, six hundred eighty".

Divisors: 1 2 4 5 8 10 16 20 40 80 797 907 1594 1814 3188 3628 3985 4535 5449 6376 7256 7970 9070 10898 12752 14512 15940 18140 21796 27245 31880 36280 43592 54490 63760 72560 87184 108980 217960 435920 722879 1445758 2891516 3614395 4342853 4942243 5783032 7228790 8685706 9884486 11566064 14457580 17371412 19768972 21714265 24711215 28915160 34742824 39537944 43428530 49422430 57830320 69485648 79075888 86857060 98844860 173714120 197689720 347428240 395379440 3938967671 7877935342 15755870684 19694838355 31511741368 39389676710 63023482736 78779353420 157558706840 315117413680