215502025253513 has 16 divisors (see below), whose sum is σ = 223262481821184. Its totient is φ = 207875882665920.

The previous prime is 215502025253363. The next prime is 215502025253561. The reversal of 215502025253513 is 315352520205512.

It is a cyclic number.

It is not a de Polignac number, because 215502025253513 - 2²⁰ = 215502024204937 is a prime.

It is a super-2 number, since 2×215502025253513² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (215502025250513) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1052270 + ... + 20787287.

It is an arithmetic number, because the mean of its divisors is an integer number (13953905113824).

Almost surely, 2^{215502025253513} is an apocalyptic number.

It is an amenable number.

215502025253513 is a deficient number, since it is larger than the sum of its proper divisors (7760456567671).

215502025253513 is a wasteful number, since it uses less digits than its factorization.

215502025253513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21842632.

The product of its (nonzero) digits is 450000, while the sum is 41.

The spelling of 215502025253513 in words is "two hundred fifteen trillion, five hundred two billion, twenty-five million, two hundred fifty-three thousand, five hundred thirteen".