11985155488 has 48 divisors (see below), whose sum is σ = 23960059200. Its totient is φ = 5900691456.

The previous prime is 11985155471. The next prime is 11985155509. The reversal of 11985155488 is 88455158911.

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, 607995 + ... + 627397.

It is an arithmetic number, because the mean of its divisors is an integer number (499167900).

Almost surely, 2^11985155488 is an apocalyptic number.

It is an amenable number.

11985155488 is a deficient number, since it is larger than the sum of its proper divisors (11974903712).

11985155488 is a wasteful number, since it uses less digits than its factorization.

11985155488 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19709 (or 19701 counting only the distinct ones).

The product of its digits is 2304000, while the sum is 55.

The spelling of 11985155488 in words is "eleven billion, nine hundred eighty-five million, one hundred fifty-five thousand, four hundred eighty-eight".