111990853266831 has 256 divisors, whose sum is σ = 212366407680000. Its totient is φ = 57357383143680.

The previous prime is 111990853266829. The next prime is 111990853266841. The reversal of 111990853266831 is 138662358099111.

111990853266831 is a `hidden beast` number, since 1 + 1 + 1 + 9 + 9 + 0 + 8 + 532 + 6 + 68 + 31 = 666.

It is not a de Polignac number, because 111990853266831 - 2¹ = 111990853266829 is a prime.

It is a super-2 number, since 2×111990853266831² (a number of 29 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111990853266841) by changing a digit.

It is a polite number, since it can be written in 255 ways as a sum of consecutive naturals, for example, 6974573355 + ... + 6974589411.

It is an arithmetic number, because the mean of its divisors is an integer number (829556280000).

Almost surely, 2^{111990853266831} is an apocalyptic number.

111990853266831 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

111990853266831 is a deficient number, since it is larger than the sum of its proper divisors (100375554413169).

111990853266831 is an equidigital number, since it uses as much as digits as its factorization.

111990853266831 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16678 (or 16660 counting only the distinct ones).

The product of its (nonzero) digits is 16796160, while the sum is 63.

The spelling of 111990853266831 in words is "one hundred eleven trillion, nine hundred ninety billion, eight hundred fifty-three million, two hundred sixty-six thousand, eight hundred thirty-one".