111143678965 has 16 divisors (see below), whose sum is σ = 146937753216. Its totient is φ = 80031448000.

The previous prime is 111143678953. The next prime is 111143678983. The reversal of 111143678965 is 569876341111.

It is a happy number.

It is not a de Polignac number, because 111143678965 - 2¹³ = 111143670773 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9998377 + ... + 10009486.

It is an arithmetic number, because the mean of its divisors is an integer number (9183609576).

Almost surely, 2^111143678965 is an apocalyptic number.

It is an amenable number.

111143678965 is a deficient number, since it is larger than the sum of its proper divisors (35794074251).

111143678965 is a wasteful number, since it uses less digits than its factorization.

111143678965 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20007980.

The product of its digits is 1088640, while the sum is 52.

The spelling of 111143678965 in words is "one hundred eleven billion, one hundred forty-three million, six hundred seventy-eight thousand, nine hundred sixty-five".