108820517959 has 4 divisors (see below), whose sum is σ = 112330857280. Its totient is φ = 105310178640.

The previous prime is 108820517909. The next prime is 108820517999. The reversal of 108820517959 is 959715028801.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 108820517959 - 2¹³ = 108820509767 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (108820517909) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1755169614 + ... + 1755169675.

It is an arithmetic number, because the mean of its divisors is an integer number (28082714320).

Almost surely, 2^108820517959 is an apocalyptic number.

108820517959 is a deficient number, since it is larger than the sum of its proper divisors (3510339321).

108820517959 is an equidigital number, since it uses as much as digits as its factorization.

108820517959 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3510339320.

The product of its (nonzero) digits is 1814400, while the sum is 55.

The spelling of 108820517959 in words is "one hundred eight billion, eight hundred twenty million, five hundred seventeen thousand, nine hundred fifty-nine".