Search a number
-
+
68457007906560 = 28310571337269
BaseRepresentation
bin11111001000010111000111…
…01000110111111100000000
322222101102111120210000000000
433210023203220313330000
532433044423011002220
6401332414300000000
720263566321161130
oct1744134350677400
9288342446700000
1068457007906560
111a8a34aa3246a9
127817515530000
132c27611694370
1412c94a04c2ac0
157daacd133390
hex3e42e3a37f00

68457007906560 has 3168 divisors, whose sum is σ = 312060563660160. Its totient is φ = 14001063985152.

The previous prime is 68457007906519. The next prime is 68457007906579. The reversal of 68457007906560 is 6560970075486.

68457007906560 is a `hidden beast` number, since 6 + 8 + 4 + 570 + 0 + 7 + 9 + 0 + 6 + 56 + 0 = 666.

68457007906560 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 351 ways as a sum of consecutive naturals, for example, 254487018106 + ... + 254487018374.

Almost surely, 268457007906560 is an apocalyptic number.

68457007906560 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 68457007906560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (156030281830080).

68457007906560 is an abundant number, since it is smaller than the sum of its proper divisors (243603555753600).

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

68457007906560 is an equidigital number, since it uses as much as digits as its factorization.

68457007906560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 377 (or 336 counting only the distinct ones).

The product of its (nonzero) digits is 76204800, while the sum is 63.

The spelling of 68457007906560 in words is "sixty-eight trillion, four hundred fifty-seven billion, seven million, nine hundred six thousand, five hundred sixty".