18705452472 has 120 divisors (see below), whose sum is σ = 60946581960. Its totient is φ = 5344405920.

The previous prime is 18705452459. The next prime is 18705452503. The reversal of 18705452472 is 27425450781.

18705452472 is a `hidden beast` number, since 1 + 8 + 7 + 0 + 54 + 524 + 72 = 666.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 29 ways as a sum of consecutive naturals, for example, 262804 + ... + 326307.

It is an arithmetic number, because the mean of its divisors is an integer number (507888183).

Almost surely, 2^18705452472 is an apocalyptic number.

18705452472 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

18705452472 is an abundant number, since it is smaller than the sum of its proper divisors (42241129488).

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

18705452472 is a wasteful number, since it uses less digits than its factorization.

18705452472 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 589143 (or 589123 counting only the distinct ones).

The product of its (nonzero) digits is 627200, while the sum is 45.

The spelling of 18705452472 in words is "eighteen billion, seven hundred five million, four hundred fifty-two thousand, four hundred seventy-two".