51730856475880 has 32 divisors (see below), whose sum is σ = 117091399703040. Its totient is φ = 20568436344640.

The previous prime is 51730856475869. The next prime is 51730856475899. The reversal of 51730856475880 is 8857465803715.

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, 3872063416 + ... + 3872076775.

It is an arithmetic number, because the mean of its divisors is an integer number (3659106240720).

Almost surely, 2^{51730856475880} is an apocalyptic number.

It is an amenable number.

51730856475880 is an abundant number, since it is smaller than the sum of its proper divisors (65360543227160).

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

51730856475880 is a wasteful number, since it uses less digits than its factorization.

51730856475880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7744140369 (or 7744140365 counting only the distinct ones).

The product of its (nonzero) digits is 225792000, while the sum is 67.

The spelling of 51730856475880 in words is "fifty-one trillion, seven hundred thirty billion, eight hundred fifty-six million, four hundred seventy-five thousand, eight hundred eighty".