99111813759 has 40 divisors (see below), whose sum is σ = 171348700160. Its totient is φ = 55918394064.

The previous prime is 99111813737. The next prime is 99111813791. The reversal of 99111813759 is 95731811199.

99111813759 is a `hidden beast` number, since 9 + 91 + 1 + 181 + 375 + 9 = 666.

It is not a de Polignac number, because 99111813759 - 2¹² = 99111809663 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99111813799) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 1061539 + ... + 1151124.

It is an arithmetic number, because the mean of its divisors is an integer number (4283717504).

Almost surely, 2^99111813759 is an apocalyptic number.

99111813759 is a deficient number, since it is larger than the sum of its proper divisors (72236886401).

99111813759 is a wasteful number, since it uses less digits than its factorization.

99111813759 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2212761 (or 2212752 counting only the distinct ones).

The product of its digits is 612360, while the sum is 54.

The spelling of 99111813759 in words is "ninety-nine billion, one hundred eleven million, eight hundred thirteen thousand, seven hundred fifty-nine".