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57516112121181 = 3719731388171557
BaseRepresentation
bin11010001001111100000110…
…11011101000110101011101
321112122111010202010111220120
431010332003123220311131
530014320444200334211
6322154312004505153
715054254606346150
oct1504760333506535
9245574122114816
1057516112121181
111736549a939a5a
12654b0116ab1b9
13261299124b28c
14102bb1a85dc97
1569b1d5733d06
hex344f836e8d5d

57516112121181 has 16 divisors (see below), whose sum is σ = 87688020975744. Its totient is φ = 32849691701184.

The previous prime is 57516112121179. The next prime is 57516112121197. The reversal of 57516112121181 is 18112121161575.

It is not a de Polignac number, because 57516112121181 - 21 = 57516112121179 is a prime.

It is a super-2 number, since 2×575161121211812 (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57516112121101) 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, 694044346 + ... + 694127211.

It is an arithmetic number, because the mean of its divisors is an integer number (5480501310984).

Almost surely, 257516112121181 is an apocalyptic number.

It is an amenable number.

57516112121181 is a deficient number, since it is larger than the sum of its proper divisors (30171908854563).

57516112121181 is a wasteful number, since it uses less digits than its factorization.

57516112121181 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1388173540.

The product of its digits is 33600, while the sum is 42.

The spelling of 57516112121181 in words is "fifty-seven trillion, five hundred sixteen billion, one hundred twelve million, one hundred twenty-one thousand, one hundred eighty-one".

Divisors: 1 3 7 21 1973 5919 13811 41433 1388171557 4164514671 9717200899 29151602697 2738862481961 8216587445883 19172037373727 57516112121181