51000551016 has 64 divisors (see below), whose sum is σ = 128137464000. Its totient is φ = 16915584000.

The previous prime is 51000551009. The next prime is 51000551033. The reversal of 51000551016 is 61015500015.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4106416 + ... + 4118816.

It is an arithmetic number, because the mean of its divisors is an integer number (2002147875).

Almost surely, 2^51000551016 is an apocalyptic number.

It is an amenable number.

51000551016 is an abundant number, since it is smaller than the sum of its proper divisors (77136912984).

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

51000551016 is a wasteful number, since it uses less digits than its factorization.

51000551016 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13250 (or 13246 counting only the distinct ones).

The product of its (nonzero) digits is 750, while the sum is 24.

The spelling of 51000551016 in words is "fifty-one billion, five hundred fifty-one thousand, sixteen".