20215601328 has 40 divisors (see below), whose sum is σ = 56240841328. Its totient is φ = 6220184832.

The previous prime is 20215601303. The next prime is 20215601377. The reversal of 20215601328 is 82310651202.

It is a junction number, because it is equal to n+sod(n) for n = 20215601295 and 20215601304.

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, 16197775 + ... + 16199022.

Almost surely, 2^20215601328 is an apocalyptic number.

It is an amenable number.

20215601328 is an abundant number, since it is smaller than the sum of its proper divisors (36025240000).

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

20215601328 is a wasteful number, since it uses less digits than its factorization.

20215601328 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32396821 (or 32396815 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 30.

The spelling of 20215601328 in words is "twenty billion, two hundred fifteen million, six hundred one thousand, three hundred twenty-eight".