51764163916 has 12 divisors (see below), whose sum is σ = 90590372488. Its totient is φ = 25881200352.

The previous prime is 51764163881. The next prime is 51764163947. The reversal of 51764163916 is 61936146715.

It is a happy number.

It is a hoax number, since the sum of its digits (49) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 51764163916.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 78081 + ... + 331096.

Almost surely, 2^51764163916 is an apocalyptic number.

It is an amenable number.

51764163916 is a deficient number, since it is larger than the sum of its proper divisors (38826208572).

51764163916 is a wasteful number, since it uses less digits than its factorization.

51764163916 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 440808 (or 440806 counting only the distinct ones).

The product of its digits is 816480, while the sum is 49.

The spelling of 51764163916 in words is "fifty-one billion, seven hundred sixty-four million, one hundred sixty-three thousand, nine hundred sixteen".