108091789859475 has 30 divisors (see below), whose sum is σ = 200223359886660. Its totient is φ = 57648954590640.

The previous prime is 108091789859461. The next prime is 108091789859477. The reversal of 108091789859475 is 574958987190801.

108091789859475 is a `hidden beast` number, since 1 + 0 + 8 + 0 + 9 + 1 + 7 + 8 + 98 + 59 + 475 = 666.

108091789859475 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 108091789859475 - 2⁶ = 108091789859411 is a prime.

It is a Smith number, since the sum of its digits (81) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (81).

It is a junction number, because it is equal to n+sod(n) for n = 108091789859394 and 108091789859403.

It is not an unprimeable number, because it can be changed into a prime (108091789859477) by changing a digit.

It is a polite number, since it can be written in 29 ways as a sum of consecutive naturals, for example, 26689328805 + ... + 26689332854.

It is an arithmetic number, because the mean of its divisors is an integer number (6674111996222).

Almost surely, 2^{108091789859475} is an apocalyptic number.

108091789859475 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

108091789859475 is a deficient number, since it is larger than the sum of its proper divisors (92131570027185).

108091789859475 is an equidigital number, since it uses as much as digits as its factorization.

108091789859475 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53378661681 (or 53378661667 counting only the distinct ones).

The product of its (nonzero) digits is 1828915200, while the sum is 81.

The spelling of 108091789859475 in words is "one hundred eight trillion, ninety-one billion, seven hundred eighty-nine million, eight hundred fifty-nine thousand, four hundred seventy-five".