108815221958 has 16 divisors (see below), whose sum is σ = 164685024720. Its totient is φ = 53920317696.

The previous prime is 108815221913. The next prime is 108815221979. The reversal of 108815221958 is 859122518801.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2716298 + ... + 2756066.

It is an arithmetic number, because the mean of its divisors is an integer number (10292814045).

Almost surely, 2^108815221958 is an apocalyptic number.

108815221958 is a deficient number, since it is larger than the sum of its proper divisors (55869802762).

108815221958 is a wasteful number, since it uses less digits than its factorization.

108815221958 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51991.

The product of its (nonzero) digits is 460800, while the sum is 50.

The spelling of 108815221958 in words is "one hundred eight billion, eight hundred fifteen million, two hundred twenty-one thousand, nine hundred fifty-eight".