2115557017272 has 48 divisors (see below), whose sum is σ = 5729702041440. Its totient is φ = 705177247488.

The previous prime is 2115557017247. The next prime is 2115557017289. The reversal of 2115557017272 is 2727107555112.

2115557017272 is a `hidden beast` number, since 2 + 1 + 1 + 5 + 5 + 570 + 1 + 7 + 2 + 72 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9813313 + ... + 10026575.

It is an arithmetic number, because the mean of its divisors is an integer number (119368792530).

Almost surely, 2^{2115557017272} is an apocalyptic number.

It is an amenable number.

2115557017272 is an abundant number, since it is smaller than the sum of its proper divisors (3614145024168).

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

2115557017272 is a wasteful number, since it uses less digits than its factorization.

2115557017272 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 351052 (or 351045 counting only the distinct ones).

The product of its (nonzero) digits is 343000, while the sum is 45.

The spelling of 2115557017272 in words is "two trillion, one hundred fifteen billion, five hundred fifty-seven million, seventeen thousand, two hundred seventy-two".