2156013520515 has 12 divisors (see below), whose sum is σ = 3737090102304. Its totient is φ = 1149873877584.

The previous prime is 2156013520499. The next prime is 2156013520589. The reversal of 2156013520515 is 5150253106512.

2156013520515 is a `hidden beast` number, since 2 + 1 + 5 + 6 + 0 + 135 + 2 + 0 + 515 = 666.

It is not a de Polignac number, because 2156013520515 - 2⁴ = 2156013520499 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2156013520515.

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, 23955705739 + ... + 23955705828.

It is an arithmetic number, because the mean of its divisors is an integer number (311424175192).

Almost surely, 2^{2156013520515} is an apocalyptic number.

2156013520515 is a deficient number, since it is larger than the sum of its proper divisors (1581076581789).

2156013520515 is a wasteful number, since it uses less digits than its factorization.

2156013520515 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47911411578 (or 47911411575 counting only the distinct ones).

The product of its (nonzero) digits is 45000, while the sum is 36.

The spelling of 2156013520515 in words is "two trillion, one hundred fifty-six billion, thirteen million, five hundred twenty thousand, five hundred fifteen".