11955144164 has 24 divisors (see below), whose sum is σ = 21184665600. Its totient is φ = 5902696800.

The previous prime is 11955144137. The next prime is 11955144193. The reversal of 11955144164 is 46144155911.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 114077 + ... + 192155.

It is an arithmetic number, because the mean of its divisors is an integer number (882694400).

Almost surely, 2^11955144164 is an apocalyptic number.

It is an amenable number.

11955144164 is a deficient number, since it is larger than the sum of its proper divisors (9229521436).

11955144164 is a wasteful number, since it uses less digits than its factorization.

11955144164 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78563 (or 78561 counting only the distinct ones).

The product of its digits is 86400, while the sum is 41.

The spelling of 11955144164 in words is "eleven billion, nine hundred fifty-five million, one hundred forty-four thousand, one hundred sixty-four".