111356401257 has 12 divisors (see below), whose sum is σ = 160865664960. Its totient is φ = 74229510168.

The previous prime is 111356401253. The next prime is 111356401259. The reversal of 111356401257 is 752104653111.

111356401257 is a `hidden beast` number, since 1 + 1 + 1 + 3 + 5 + 640 + 1 + 2 + 5 + 7 = 666.

It is not a de Polignac number, because 111356401257 - 2² = 111356401253 is a prime.

It is not an unprimeable number, because it can be changed into a prime (111356401253) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 586453 + ... + 752754.

It is an arithmetic number, because the mean of its divisors is an integer number (13405472080).

Almost surely, 2^111356401257 is an apocalyptic number.

It is an amenable number.

111356401257 is a deficient number, since it is larger than the sum of its proper divisors (49509263703).

111356401257 is a wasteful number, since it uses less digits than its factorization.

111356401257 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1348452 (or 1348449 counting only the distinct ones).

The product of its (nonzero) digits is 25200, while the sum is 36.

The spelling of 111356401257 in words is "one hundred eleven billion, three hundred fifty-six million, four hundred one thousand, two hundred fifty-seven".