111617431628 has 24 divisors (see below), whose sum is σ = 199048842720. Its totient is φ = 54746681600.

The previous prime is 111617431613. The next prime is 111617431631. The reversal of 111617431628 is 826134716111.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1348628 + ... + 1428996.

It is an arithmetic number, because the mean of its divisors is an integer number (8293701780).

Almost surely, 2^111617431628 is an apocalyptic number.

It is an amenable number.

111617431628 is a deficient number, since it is larger than the sum of its proper divisors (87431411092).

111617431628 is a wasteful number, since it uses less digits than its factorization.

111617431628 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86977 (or 86975 counting only the distinct ones).

The product of its digits is 48384, while the sum is 41.

The spelling of 111617431628 in words is "one hundred eleven billion, six hundred seventeen million, four hundred thirty-one thousand, six hundred twenty-eight".