68123452256 has 48 divisors (see below), whose sum is σ = 139718008080. Its totient is φ = 32667678720.

The previous prime is 68123452247. The next prime is 68123452261. The reversal of 68123452256 is 65225432186.

It is a super-2 number, since 2×68123452256² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 362621 + ... + 517436.

It is an arithmetic number, because the mean of its divisors is an integer number (2910791835).

Almost surely, 2^68123452256 is an apocalyptic number.

It is an amenable number.

68123452256 is an abundant number, since it is smaller than the sum of its proper divisors (71594555824).

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

68123452256 is a wasteful number, since it uses less digits than its factorization.

68123452256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 880167 (or 880159 counting only the distinct ones).

The product of its digits is 691200, while the sum is 44.

The spelling of 68123452256 in words is "sixty-eight billion, one hundred twenty-three million, four hundred fifty-two thousand, two hundred fifty-six".