68426424864 has 96 divisors (see below), whose sum is σ = 228088103040. Its totient is φ = 19550405376.

The previous prime is 68426424823. The next prime is 68426424881. The reversal of 68426424864 is 46842462486.

68426424864 is a `hidden beast` number, since 6 + 84 + 264 + 248 + 64 = 666.

It is a tau number, because it is divible by the number of its divisors (96).

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a nude number because it is divisible by every one of its digits.

It is a nialpdrome in base 16.

It is a self number, because there is not a number n which added to its sum of digits gives 68426424864.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5650899 + ... + 5662994.

It is an arithmetic number, because the mean of its divisors is an integer number (2375917740).

Almost surely, 2^68426424864 is an apocalyptic number.

It is an amenable number.

68426424864 is an abundant number, since it is smaller than the sum of its proper divisors (159661678176).

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

68426424864 is a wasteful number, since it uses less digits than its factorization.

68426424864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11313919 (or 11313905 counting only the distinct ones).

The product of its digits is 14155776, while the sum is 54.

The spelling of 68426424864 in words is "sixty-eight billion, four hundred twenty-six million, four hundred twenty-four thousand, eight hundred sixty-four".