68457665832 has 32 divisors (see below), whose sum is σ = 171694486080. Its totient is φ = 22745845760.

The previous prime is 68457665803. The next prime is 68457665833. The reversal of 68457665832 is 23856675486.

It is a super-2 number, since 2×68457665832² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (68457665833) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4578393 + ... + 4593320.

It is an arithmetic number, because the mean of its divisors is an integer number (5365452690).

Almost surely, 2^68457665832 is an apocalyptic number.

It is an amenable number.

68457665832 is an abundant number, since it is smaller than the sum of its proper divisors (103236820248).

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

68457665832 is a wasteful number, since it uses less digits than its factorization.

68457665832 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9172033 (or 9172029 counting only the distinct ones).

The product of its digits is 58060800, while the sum is 60.

The spelling of 68457665832 in words is "sixty-eight billion, four hundred fifty-seven million, six hundred sixty-five thousand, eight hundred thirty-two".