51345064011320 has 32 divisors (see below), whose sum is σ = 115610905044000. Its totient is φ = 20523001423488.

The previous prime is 51345064011317. The next prime is 51345064011331. The reversal of 51345064011320 is 2311046054315.

It is a congruent number.

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, 469450295 + ... + 469559654.

It is an arithmetic number, because the mean of its divisors is an integer number (3612840782625).

Almost surely, 2^{51345064011320} is an apocalyptic number.

It is an amenable number.

51345064011320 is an abundant number, since it is smaller than the sum of its proper divisors (64265841032680).

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

51345064011320 is a wasteful number, since it uses less digits than its factorization.

51345064011320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 939011327 (or 939011323 counting only the distinct ones).

The product of its (nonzero) digits is 43200, while the sum is 35.

The spelling of 51345064011320 in words is "fifty-one trillion, three hundred forty-five billion, sixty-four million, eleven thousand, three hundred twenty".