51543765696 has 56 divisors (see below), whose sum is σ = 136392873264. Its totient is φ = 17179156480.

The previous prime is 51543765683. The next prime is 51543765719. The reversal of 51543765696 is 69656734515.

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, 3017596 + ... + 3034628.

Almost surely, 2^51543765696 is an apocalyptic number.

It is an amenable number.

51543765696 is an abundant number, since it is smaller than the sum of its proper divisors (84849107568).

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

51543765696 is a wasteful number, since it uses less digits than its factorization.

51543765696 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32809 (or 32799 counting only the distinct ones).

The product of its digits is 20412000, while the sum is 57.

The spelling of 51543765696 in words is "fifty-one billion, five hundred forty-three million, seven hundred sixty-five thousand, six hundred ninety-six".