51807966946 has 16 divisors (see below), whose sum is σ = 82301045184. Its totient is φ = 24407905104.

The previous prime is 51807966937. The next prime is 51807966953. The reversal of 51807966946 is 64966970815.

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, 8401845 + ... + 8408008.

It is an arithmetic number, because the mean of its divisors is an integer number (5143815324).

Almost surely, 2^51807966946 is an apocalyptic number.

51807966946 is a deficient number, since it is larger than the sum of its proper divisors (30493078238).

51807966946 is a wasteful number, since it uses less digits than its factorization.

51807966946 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16809945.

The product of its (nonzero) digits is 19595520, while the sum is 61.

The spelling of 51807966946 in words is "fifty-one billion, eight hundred seven million, nine hundred sixty-six thousand, nine hundred forty-six".