68438788792 has 16 divisors (see below), whose sum is σ = 139988431800. Its totient is φ = 31108540320.

The previous prime is 68438788787. The next prime is 68438788807. The reversal of 68438788792 is 29788783486.

It is a super-2 number, since 2×68438788792² (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 3 ways as a sum of consecutive naturals, for example, 388856667 + ... + 388856842.

Almost surely, 2^68438788792 is an apocalyptic number.

It is an amenable number.

68438788792 is an abundant number, since it is smaller than the sum of its proper divisors (71549643008).

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

68438788792 is a wasteful number, since it uses less digits than its factorization.

68438788792 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 777713526 (or 777713522 counting only the distinct ones).

The product of its digits is 260112384, while the sum is 70.

The spelling of 68438788792 in words is "sixty-eight billion, four hundred thirty-eight million, seven hundred eighty-eight thousand, seven hundred ninety-two".