18850585572 has 144 divisors (see below), whose sum is σ = 61224347520. Its totient is φ = 4971564864.

The previous prime is 18850585549. The next prime is 18850585601. The reversal of 18850585572 is 27558505881.

18850585572 is a `hidden beast` number, since 1 + 8 + 8 + 5 + 0 + 585 + 57 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

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 47 ways as a sum of consecutive naturals, for example, 68208 + ... + 205799.

It is an arithmetic number, because the mean of its divisors is an integer number (425169080).

Almost surely, 2^18850585572 is an apocalyptic number.

18850585572 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

18850585572 is an abundant number, since it is smaller than the sum of its proper divisors (42373761948).

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

18850585572 is a wasteful number, since it uses less digits than its factorization.

18850585572 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 274047 (or 274032 counting only the distinct ones).

The product of its (nonzero) digits is 4480000, while the sum is 54.

The spelling of 18850585572 in words is "eighteen billion, eight hundred fifty million, five hundred eighty-five thousand, five hundred seventy-two".