51900854668 has 24 divisors (see below), whose sum is σ = 97821053568. Its totient is φ = 23952304896.

The previous prime is 51900854659. The next prime is 51900854671. The reversal of 51900854668 is 86645800915.

It is a Harshad number since it is a multiple of its sum of digits (52).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 760980 + ... + 826372.

It is an arithmetic number, because the mean of its divisors is an integer number (4075877232).

Almost surely, 2^51900854668 is an apocalyptic number.

It is an amenable number.

51900854668 is a deficient number, since it is larger than the sum of its proper divisors (45920198900).

51900854668 is a wasteful number, since it uses less digits than its factorization.

51900854668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80673 (or 80671 counting only the distinct ones).

The product of its (nonzero) digits is 2073600, while the sum is 52.

The spelling of 51900854668 in words is "fifty-one billion, nine hundred million, eight hundred fifty-four thousand, six hundred sixty-eight".