51506045700 has 36 divisors (see below), whose sum is σ = 149024159760. Its totient is φ = 13734945440.

The previous prime is 51506045687. The next prime is 51506045719. The reversal of 51506045700 is 754060515.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 85843110 + ... + 85843709.

Almost surely, 2^51506045700 is an apocalyptic number.

51506045700 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

51506045700 is an abundant number, since it is smaller than the sum of its proper divisors (97518114060).

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

51506045700 is a wasteful number, since it uses less digits than its factorization.

51506045700 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 171686836 (or 171686829 counting only the distinct ones).

The product of its (nonzero) digits is 21000, while the sum is 33.

The spelling of 51506045700 in words is "fifty-one billion, five hundred six million, forty-five thousand, seven hundred".