111989750673 has 4 divisors (see below), whose sum is σ = 149319667568. Its totient is φ = 74659833780.

The previous prime is 111989750659. The next prime is 111989750707. The reversal of 111989750673 is 376057989111.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 111989750673 - 2²⁰ = 111988702097 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (111989750623) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18664958443 + ... + 18664958448.

It is an arithmetic number, because the mean of its divisors is an integer number (37329916892).

Almost surely, 2^111989750673 is an apocalyptic number.

It is an amenable number.

111989750673 is a deficient number, since it is larger than the sum of its proper divisors (37329916895).

111989750673 is an equidigital number, since it uses as much as digits as its factorization.

111989750673 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37329916894.

The product of its (nonzero) digits is 2857680, while the sum is 57.

The spelling of 111989750673 in words is "one hundred eleven billion, nine hundred eighty-nine million, seven hundred fifty thousand, six hundred seventy-three".