111631747479 has 16 divisors (see below), whose sum is σ = 172154986752. Its totient is φ = 63021019968.

The previous prime is 111631747471. The next prime is 111631747517. The reversal of 111631747479 is 974747136111.

It is not a de Polignac number, because 111631747479 - 2³ = 111631747471 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111631747471) 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, 32021134 + ... + 32024619.

It is an arithmetic number, because the mean of its divisors is an integer number (10759686672).

Almost surely, 2^111631747479 is an apocalyptic number.

111631747479 is a deficient number, since it is larger than the sum of its proper divisors (60523239273).

111631747479 is an equidigital number, since it uses as much as digits as its factorization.

111631747479 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64045846.

The product of its digits is 889056, while the sum is 51.

The spelling of 111631747479 in words is "one hundred eleven billion, six hundred thirty-one million, seven hundred forty-seven thousand, four hundred seventy-nine".