111551453214531 has 16 divisors (see below), whose sum is σ = 163153104860928. Its totient is φ = 67233422325600.

The previous prime is 111551453214499. The next prime is 111551453214533. The reversal of 111551453214531 is 135412354155111.

It is not a de Polignac number, because 111551453214531 - 2⁵ = 111551453214499 is a prime.

It is a super-2 number, since 2×111551453214531² (a number of 29 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (111551453214533) 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, 9337969351 + ... + 9337981296.

It is an arithmetic number, because the mean of its divisors is an integer number (10197069053808).

Almost surely, 2^{111551453214531} is an apocalyptic number.

111551453214531 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

111551453214531 is a deficient number, since it is larger than the sum of its proper divisors (51601651646397).

111551453214531 is a wasteful number, since it uses less digits than its factorization.

111551453214531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18675950842.

The product of its digits is 180000, while the sum is 42.

The spelling of 111551453214531 in words is "one hundred eleven trillion, five hundred fifty-one billion, four hundred fifty-three million, two hundred fourteen thousand, five hundred thirty-one".