11553213226572 has 36 divisors (see below), whose sum is σ = 29205941903320. Its totient is φ = 3850809152832.

The previous prime is 11553213226553. The next prime is 11553213226619. The reversal of 11553213226572 is 27562231235511.

11553213226572 is a `hidden beast` number, since 1 + 1 + 5 + 5 + 3 + 21 + 32 + 26 + 572 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10376422 + ... + 11435757.

Almost surely, 2^{11553213226572} is an apocalyptic number.

11553213226572 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

11553213226572 is an abundant number, since it is smaller than the sum of its proper divisors (17652728676748).

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

11553213226572 is a wasteful number, since it uses less digits than its factorization.

11553213226572 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21826902 (or 21826897 counting only the distinct ones).

The product of its digits is 756000, while the sum is 45.

The spelling of 11553213226572 in words is "eleven trillion, five hundred fifty-three billion, two hundred thirteen million, two hundred twenty-six thousand, five hundred seventy-two".