68408624256 has 64 divisors (see below), whose sum is σ = 207669046080. Its totient is φ = 19545320448.

The previous prime is 68408624243. The next prime is 68408624261. The reversal of 68408624256 is 65242680486.

It is a happy number.

68408624256 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (64).

It is a junction number, because it is equal to n+sod(n) for n = 68408624199 and 68408624208.

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, 12722131 + ... + 12727506.

It is an arithmetic number, because the mean of its divisors is an integer number (3244828845).

Almost surely, 2^68408624256 is an apocalyptic number.

It is an amenable number.

68408624256 is an abundant number, since it is smaller than the sum of its proper divisors (139260421824).

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

68408624256 is a wasteful number, since it uses less digits than its factorization.

68408624256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25449661 (or 25449649 counting only the distinct ones).

The product of its (nonzero) digits is 4423680, while the sum is 51.

The spelling of 68408624256 in words is "sixty-eight billion, four hundred eight million, six hundred twenty-four thousand, two hundred fifty-six".