11621645584172 has 24 divisors (see below), whose sum is σ = 21910288137696. Its totient is φ = 5361887996928.

The previous prime is 11621645584151. The next prime is 11621645584249. The reversal of 11621645584172 is 27148554612611.

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, 40447688 + ... + 40733999.

It is an arithmetic number, because the mean of its divisors is an integer number (912928672404).

Almost surely, 2^{11621645584172} is an apocalyptic number.

It is an amenable number.

11621645584172 is a deficient number, since it is larger than the sum of its proper divisors (10288642553524).

11621645584172 is a wasteful number, since it uses less digits than its factorization.

11621645584172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81184457 (or 81184455 counting only the distinct ones).

The product of its digits is 3225600, while the sum is 53.

The spelling of 11621645584172 in words is "eleven trillion, six hundred twenty-one billion, six hundred forty-five million, five hundred eighty-four thousand, one hundred seventy-two".