51684890360 has 32 divisors (see below), whose sum is σ = 116620471440. Its totient is φ = 20615384064.

The previous prime is 51684890359. The next prime is 51684890437. The reversal of 51684890360 is 6309848615.

It is a junction number, because it is equal to n+sod(n) for n = 51684890299 and 51684890308.

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, 1816082 + ... + 1844321.

Almost surely, 2^51684890360 is an apocalyptic number.

It is an amenable number.

51684890360 is an abundant number, since it is smaller than the sum of its proper divisors (64935581080).

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

51684890360 is a wasteful number, since it uses less digits than its factorization.

51684890360 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3660767 (or 3660763 counting only the distinct ones).

The product of its (nonzero) digits is 1244160, while the sum is 50.

The spelling of 51684890360 in words is "fifty-one billion, six hundred eighty-four million, eight hundred ninety thousand, three hundred sixty".