111551615163 has 6 divisors (see below), whose sum is σ = 161130110804. Its totient is φ = 74367743436.

The previous prime is 111551615159. The next prime is 111551615167. The reversal of 111551615163 is 361516155111.

111551615163 is a `hidden beast` number, since 1 + 115 + 516 + 15 + 16 + 3 = 666.

It is an interprime number because it is at equal distance from previous prime (111551615159) and next prime (111551615167).

It is not a de Polignac number, because 111551615163 - 2² = 111551615159 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (111551615167) 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 5 ways as a sum of consecutive naturals, for example, 6197311945 + ... + 6197311962.

Almost surely, 2^111551615163 is an apocalyptic number.

111551615163 is a deficient number, since it is larger than the sum of its proper divisors (49578495641).

111551615163 is a wasteful number, since it uses less digits than its factorization.

111551615163 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12394623913 (or 12394623910 counting only the distinct ones).

The product of its digits is 13500, while the sum is 36.

The spelling of 111551615163 in words is "one hundred eleven billion, five hundred fifty-one million, six hundred fifteen thousand, one hundred sixty-three".