111609337499 has 12 divisors (see below), whose sum is σ = 129894389352. Its totient is φ = 95494618560.

The previous prime is 111609337451. The next prime is 111609337501. The reversal of 111609337499 is 994733906111.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-111609337499 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 111609337499.

It is not an unprimeable number, because it can be changed into a prime (111609337439) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 27127097 + ... + 27131210.

It is an arithmetic number, because the mean of its divisors is an integer number (10824532446).

Almost surely, 2^111609337499 is an apocalyptic number.

111609337499 is a deficient number, since it is larger than the sum of its proper divisors (18285051853).

111609337499 is a wasteful number, since it uses less digits than its factorization.

111609337499 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54258346 (or 54258335 counting only the distinct ones).

The product of its (nonzero) digits is 1102248, while the sum is 53.

The spelling of 111609337499 in words is "one hundred eleven billion, six hundred nine million, three hundred thirty-seven thousand, four hundred ninety-nine".