2115591372928 has 64 divisors (see below), whose sum is σ = 4656005424000. Its totient is φ = 949459829760.

The previous prime is 2115591372919. The next prime is 2115591372959. The reversal of 2115591372928 is 8292731955112.

It is a tau number, because it is divible by the number of its divisors (64).

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, 9398583 + ... + 9621046.

It is an arithmetic number, because the mean of its divisors is an integer number (72750084750).

Almost surely, 2^{2115591372928} is an apocalyptic number.

It is an amenable number.

2115591372928 is an abundant number, since it is smaller than the sum of its proper divisors (2540414051072).

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

2115591372928 is a wasteful number, since it uses less digits than its factorization.

2115591372928 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19019733 (or 19019721 counting only the distinct ones).

The product of its digits is 2721600, while the sum is 55.

The spelling of 2115591372928 in words is "two trillion, one hundred fifteen billion, five hundred ninety-one million, three hundred seventy-two thousand, nine hundred twenty-eight".