18297578475 has 54 divisors (see below), whose sum is σ = 35765513316. Its totient is φ = 8868290400.

The previous prime is 18297578459. The next prime is 18297578489. The reversal of 18297578475 is 57487579281.

18297578475 is a `hidden beast` number, since 1 + 8 + 2 + 97 + 5 + 78 + 475 = 666.

It is not a de Polignac number, because 18297578475 - 2⁴ = 18297578459 is a prime.

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 53 ways as a sum of consecutive naturals, for example, 6728166 + ... + 6730884.

Almost surely, 2^18297578475 is an apocalyptic number.

18297578475 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

18297578475 is a deficient number, since it is larger than the sum of its proper divisors (17467934841).

18297578475 is an equidigital number, since it uses as much as digits as its factorization.

18297578475 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5465 (or 2738 counting only the distinct ones).

The product of its digits is 39513600, while the sum is 63.

The spelling of 18297578475 in words is "eighteen billion, two hundred ninety-seven million, five hundred seventy-eight thousand, four hundred seventy-five".