18447570572 has 12 divisors (see below), whose sum is σ = 32288998896. Its totient is φ = 9222142320.

The previous prime is 18447570539. The next prime is 18447570577. The reversal of 18447570572 is 27507574481.

It is a self number, because there is not a number n which added to its sum of digits gives 18447570572.

It is not an unprimeable number, because it can be changed into a prime (18447570577) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 385304 + ... + 430527.

It is an arithmetic number, because the mean of its divisors is an integer number (2690749908).

Almost surely, 2^18447570572 is an apocalyptic number.

It is an amenable number.

18447570572 is a deficient number, since it is larger than the sum of its proper divisors (13841428324).

18447570572 is a wasteful number, since it uses less digits than its factorization.

18447570572 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 821488 (or 821486 counting only the distinct ones).

The product of its (nonzero) digits is 2195200, while the sum is 50.

The spelling of 18447570572 in words is "eighteen billion, four hundred forty-seven million, five hundred seventy thousand, five hundred seventy-two".