51703836720 has 80 divisors (see below), whose sum is σ = 169710253920. Its totient is φ = 12976648192.

The previous prime is 51703836713. The next prime is 51703836733. The reversal of 51703836720 is 2763830715.

It is a tau number, because it is divible by the number of its divisors (80).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6332175 + ... + 6340334.

It is an arithmetic number, because the mean of its divisors is an integer number (2121378174).

Almost surely, 2^51703836720 is an apocalyptic number.

It is an amenable number.

51703836720 is an abundant number, since it is smaller than the sum of its proper divisors (118006417200).

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

51703836720 is a wasteful number, since it uses less digits than its factorization.

51703836720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12672542 (or 12672536 counting only the distinct ones).

The product of its (nonzero) digits is 211680, while the sum is 42.

The spelling of 51703836720 in words is "fifty-one billion, seven hundred three million, eight hundred thirty-six thousand, seven hundred twenty".