18045564884772 has 24 divisors (see below), whose sum is σ = 42122569128192. Its totient is φ = 6012866714400.

The previous prime is 18045564884693. The next prime is 18045564884791. The reversal of 18045564884772 is 27748846554081.

It is a junction number, because it is equal to n+sod(n) for n = 18045564884697 and 18045564884706.

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, 290165179 + ... + 290227362.

It is an arithmetic number, because the mean of its divisors is an integer number (1755107047008).

Almost surely, 2^{18045564884772} is an apocalyptic number.

18045564884772 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

18045564884772 is an abundant number, since it is smaller than the sum of its proper divisors (24077004243420).

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

18045564884772 is a wasteful number, since it uses less digits than its factorization.

18045564884772 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 580395139 (or 580395137 counting only the distinct ones).

The product of its (nonzero) digits is 481689600, while the sum is 69.

The spelling of 18045564884772 in words is "eighteen trillion, forty-five billion, five hundred sixty-four million, eight hundred eighty-four thousand, seven hundred seventy-two".