75321431545056 has 48 divisors (see below), whose sum is σ = 197719260914448. Its totient is φ = 25107079961600.

The previous prime is 75321431545021. The next prime is 75321431545069. The reversal of 75321431545056 is 65054513412357.

It is a tau number, because it is divible by the number of its divisors (48).

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, 50913076 + ... + 52371596.

It is an arithmetic number, because the mean of its divisors is an integer number (4119151269051).

Almost surely, 2^{75321431545056} is an apocalyptic number.

It is an amenable number.

75321431545056 is an abundant number, since it is smaller than the sum of its proper divisors (122397829369392).

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

75321431545056 is a wasteful number, since it uses less digits than its factorization.

75321431545056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1996475 (or 1996467 counting only the distinct ones).

The product of its (nonzero) digits is 7560000, while the sum is 51.

The spelling of 75321431545056 in words is "seventy-five trillion, three hundred twenty-one billion, four hundred thirty-one million, five hundred forty-five thousand, fifty-six".