11663894375 has 80 divisors (see below), whose sum is σ = 17199494400. Its totient is φ = 7742304000.

The previous prime is 11663894369. The next prime is 11663894399. The reversal of 11663894375 is 57349836611.

It is not a de Polignac number, because 11663894375 - 2¹² = 11663890279 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 18842816 + ... + 18843434.

It is an arithmetic number, because the mean of its divisors is an integer number (214993680).

Almost surely, 2^11663894375 is an apocalyptic number.

11663894375 is a deficient number, since it is larger than the sum of its proper divisors (5535600025).

11663894375 is an frugal number, since it uses more digits than its factorization.

11663894375 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 778 (or 763 counting only the distinct ones).

The product of its digits is 3265920, while the sum is 53.

The spelling of 11663894375 in words is "eleven billion, six hundred sixty-three million, eight hundred ninety-four thousand, three hundred seventy-five".