157122111615615 has 16 divisors (see below), whose sum is σ = 279328198428000. Its totient is φ = 83798459528256.

The previous prime is 157122111615593. The next prime is 157122111615619. The reversal of 157122111615615 is 516516111221751.

157122111615615 is a `hidden beast` number, since 1 + 5 + 7 + 1 + 2 + 2 + 1 + 1 + 16 + 15 + 615 = 666.

It is not a de Polignac number, because 157122111615615 - 2¹⁴ = 157122111599231 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (157122111615619) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 581933746590 + ... + 581933746859.

It is an arithmetic number, because the mean of its divisors is an integer number (17458012401750).

Almost surely, 2^{157122111615615} is an apocalyptic number.

157122111615615 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

157122111615615 is a deficient number, since it is larger than the sum of its proper divisors (122206086812385).

157122111615615 is a wasteful number, since it uses less digits than its factorization.

157122111615615 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1163867493463 (or 1163867493457 counting only the distinct ones).

The product of its digits is 126000, while the sum is 45.

The spelling of 157122111615615 in words is "one hundred fifty-seven trillion, one hundred twenty-two billion, one hundred eleven million, six hundred fifteen thousand, six hundred fifteen".