11621731104 has 72 divisors (see below), whose sum is σ = 33089844060. Its totient is φ = 3869157888.

The previous prime is 11621731027. The next prime is 11621731109. The reversal of 11621731104 is 40113712611.

11621731104 is a `hidden beast` number, since 1 + 1 + 621 + 7 + 31 + 1 + 0 + 4 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 11573456400 + 48274704 = 107580^2 + 6948^2 .

It is a tau number, because it is divible by the number of its divisors (72).

It is not an unprimeable number, because it can be changed into a prime (11621731109) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 214414 + ... + 263090.

Almost surely, 2^11621731104 is an apocalyptic number.

It is an amenable number.

11621731104 is an abundant number, since it is smaller than the sum of its proper divisors (21468112956).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11621731104 is a wasteful number, since it uses less digits than its factorization.

11621731104 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49522 (or 49511 counting only the distinct ones).

The product of its (nonzero) digits is 1008, while the sum is 27.

The spelling of 11621731104 in words is "eleven billion, six hundred twenty-one million, seven hundred thirty-one thousand, one hundred four".