51370728913488 has 80 divisors (see below), whose sum is σ = 133310105750016. Its totient is φ = 17045868766080.

The previous prime is 51370728913423. The next prime is 51370728913501. The reversal of 51370728913488 is 88431982707315.

It is a super-2 number, since 2×51370728913488² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

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, 82400995 + ... + 83022077.

Almost surely, 2^{51370728913488} is an apocalyptic number.

It is an amenable number.

51370728913488 is an abundant number, since it is smaller than the sum of its proper divisors (81939376836528).

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

51370728913488 is a wasteful number, since it uses less digits than its factorization.

51370728913488 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 628912 (or 628906 counting only the distinct ones).

The product of its (nonzero) digits is 81285120, while the sum is 66.

The spelling of 51370728913488 in words is "fifty-one trillion, three hundred seventy billion, seven hundred twenty-eight million, nine hundred thirteen thousand, four hundred eighty-eight".