11621888128 has 32 divisors (see below), whose sum is σ = 23160087360. Its totient is φ = 5809160448.

The previous prime is 11621888119. The next prime is 11621888171. The reversal of 11621888128 is 82188812611.

It is a tau number, because it is divible by the number of its divisors (32).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 470125 + ... + 494227.

It is an arithmetic number, because the mean of its divisors is an integer number (723752730).

Almost surely, 2^11621888128 is an apocalyptic number.

It is an amenable number.

11621888128 is a deficient number, since it is larger than the sum of its proper divisors (11538199232).

11621888128 is an equidigital number, since it uses as much as digits as its factorization.

11621888128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27884 (or 27872 counting only the distinct ones).

The product of its digits is 98304, while the sum is 46.

The spelling of 11621888128 in words is "eleven billion, six hundred twenty-one million, eight hundred eighty-eight thousand, one hundred twenty-eight".