18477385875 has 192 divisors, whose sum is σ = 37767719808. Its totient is φ = 8957952000.

The previous prime is 18477385847. The next prime is 18477385879. The reversal of 18477385875 is 57858377481.

18477385875 is a `hidden beast` number, since 1 + 8 + 47 + 7 + 3 + 8 + 587 + 5 = 666.

It is not a de Polignac number, because 18477385875 - 2⁷ = 18477385747 is a prime.

Its product of digits (52684800) is a multiple of the sum of its prime divisors (735).

It is not an unprimeable number, because it can be changed into a prime (18477385879) by changing a digit.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 28825555 + ... + 28826195.

It is an arithmetic number, because the mean of its divisors is an integer number (196706874).

Almost surely, 2^18477385875 is an apocalyptic number.

18477385875 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

18477385875 is an abundant number, since it is smaller than the sum of its proper divisors (19290333933).

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

18477385875 is an equidigital number, since it uses as much as digits as its factorization.

18477385875 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 757 (or 735 counting only the distinct ones).

The product of its digits is 52684800, while the sum is 63.

The spelling of 18477385875 in words is "eighteen billion, four hundred seventy-seven million, three hundred eighty-five thousand, eight hundred seventy-five".