68566253784 has 64 divisors (see below), whose sum is σ = 195959831040. Its totient is φ = 19584733440.

The previous prime is 68566253737. The next prime is 68566253797. The reversal of 68566253784 is 48735266586.

It is a congruent number.

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, 546829 + ... + 660419.

It is an arithmetic number, because the mean of its divisors is an integer number (3061872360).

Almost surely, 2^68566253784 is an apocalyptic number.

It is an amenable number.

68566253784 is an abundant number, since it is smaller than the sum of its proper divisors (127393577256).

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

68566253784 is a wasteful number, since it uses less digits than its factorization.

68566253784 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 117200 (or 117196 counting only the distinct ones).

The product of its digits is 58060800, while the sum is 60.

The spelling of 68566253784 in words is "sixty-eight billion, five hundred sixty-six million, two hundred fifty-three thousand, seven hundred eighty-four".