56631390128304 has 80 divisors (see below), whose sum is σ = 147035819998080. Its totient is φ = 18782002140160.

The previous prime is 56631390128251. The next prime is 56631390128311. The reversal of 56631390128304 is 40382109313665.

It is a happy number.

56631390128304 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It is a super-3 number, since 3×56631390128304³ (a number of 42 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

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, 15463432 + ... + 18771800.

It is an arithmetic number, because the mean of its divisors is an integer number (1837947749976).

Almost surely, 2^{56631390128304} is an apocalyptic number.

It is an amenable number.

56631390128304 is an abundant number, since it is smaller than the sum of its proper divisors (90404429869776).

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

56631390128304 is a wasteful number, since it uses less digits than its factorization.

56631390128304 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3310178 (or 3310172 counting only the distinct ones).

The product of its (nonzero) digits is 2799360, while the sum is 51.

The spelling of 56631390128304 in words is "fifty-six trillion, six hundred thirty-one billion, three hundred ninety million, one hundred twenty-eight thousand, three hundred four".