68741567864 has 32 divisors (see below), whose sum is σ = 135712012800. Its totient is φ = 32552707680.

The previous prime is 68741567857. The next prime is 68741567899. The reversal of 68741567864 is 46876514786.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 68741567797 and 68741567806.

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, 499769 + ... + 622295.

It is an arithmetic number, because the mean of its divisors is an integer number (4241000400).

Almost surely, 2^68741567864 is an apocalyptic number.

It is an amenable number.

68741567864 is a deficient number, since it is larger than the sum of its proper divisors (66970444936).

68741567864 is a wasteful number, since it uses less digits than its factorization.

68741567864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 126243 (or 126239 counting only the distinct ones).

The product of its digits is 54190080, while the sum is 62.

The spelling of 68741567864 in words is "sixty-eight billion, seven hundred forty-one million, five hundred sixty-seven thousand, eight hundred sixty-four".