51801686264 has 16 divisors (see below), whose sum is σ = 97130615400. Its totient is φ = 25900188832.

The previous prime is 51801686257. The next prime is 51801686329. The reversal of 51801686264 is 46268610815.

It is a zygodrome in base 2.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 489047 + ... + 585465.

Almost surely, 2^51801686264 is an apocalyptic number.

It is an amenable number.

51801686264 is a deficient number, since it is larger than the sum of its proper divisors (45328929136).

51801686264 is a wasteful number, since it uses less digits than its factorization.

51801686264 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 163582 (or 163578 counting only the distinct ones).

The product of its (nonzero) digits is 552960, while the sum is 47.

The spelling of 51801686264 in words is "fifty-one billion, eight hundred one million, six hundred eighty-six thousand, two hundred sixty-four".