75402724040728 has 64 divisors (see below), whose sum is σ = 166133347776000. Its totient is φ = 32068770158880.

The previous prime is 75402724040713. The next prime is 75402724040801. The reversal of 75402724040728 is 82704042720457.

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, 104522700 + ... + 105241627.

It is an arithmetic number, because the mean of its divisors is an integer number (2595833559000).

Almost surely, 2^{75402724040728} is an apocalyptic number.

It is an amenable number.

75402724040728 is an abundant number, since it is smaller than the sum of its proper divisors (90730623735272).

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

75402724040728 is a wasteful number, since it uses less digits than its factorization.

75402724040728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 209764485 (or 209764467 counting only the distinct ones).

The product of its (nonzero) digits is 7024640, while the sum is 52.

The spelling of 75402724040728 in words is "seventy-five trillion, four hundred two billion, seven hundred twenty-four million, forty thousand, seven hundred twenty-eight".