111552720858523 has 4 divisors (see below), whose sum is σ = 127488823838320. Its totient is φ = 95616617878728.

The previous prime is 111552720858457. The next prime is 111552720858587. The reversal of 111552720858523 is 325858027255111.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 111552720858523 - 2³³ = 111544130923931 is a prime.

It is not an unprimeable number, because it can be changed into a prime (111552720852523) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7968051489888 + ... + 7968051489901.

It is an arithmetic number, because the mean of its divisors is an integer number (31872205959580).

Almost surely, 2^{111552720858523} is an apocalyptic number.

111552720858523 is a deficient number, since it is larger than the sum of its proper divisors (15936102979797).

111552720858523 is an equidigital number, since it uses as much as digits as its factorization.

111552720858523 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15936102979796.

The product of its (nonzero) digits is 6720000, while the sum is 55.

The spelling of 111552720858523 in words is "one hundred eleven trillion, five hundred fifty-two billion, seven hundred twenty million, eight hundred fifty-eight thousand, five hundred twenty-three".