68439976704 has 360 divisors, whose sum is σ = 229833246720. Its totient is φ = 20068300800.

The previous prime is 68439976697. The next prime is 68439976721. The reversal of 68439976704 is 40767993486.

68439976704 is a `hidden beast` number, since 68 + 439 + 9 + 76 + 70 + 4 = 666.

It is a super-2 number, since 2×68439976704² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 7066137 + ... + 7075815.

Almost surely, 2^68439976704 is an apocalyptic number.

68439976704 is a gapful number since it is divisible by the number (64) 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 68439976704, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (114916623360).

68439976704 is an abundant number, since it is smaller than the sum of its proper divisors (161393270016).

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

68439976704 is a wasteful number, since it uses less digits than its factorization.

68439976704 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9749 (or 9726 counting only the distinct ones).

The product of its (nonzero) digits is 54867456, while the sum is 63.

The spelling of 68439976704 in words is "sixty-eight billion, four hundred thirty-nine million, nine hundred seventy-six thousand, seven hundred four".