108523921065 has 16 divisors (see below), whose sum is σ = 198443741568. Its totient is φ = 49610935296.

The previous prime is 108523921007. The next prime is 108523921091. The reversal of 108523921065 is 560129325801.

It is not a de Polignac number, because 108523921065 - 2¹⁰ = 108523920041 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 516780472 + ... + 516780681.

It is an arithmetic number, because the mean of its divisors is an integer number (12402733848).

Almost surely, 2^108523921065 is an apocalyptic number.

108523921065 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

108523921065 is a deficient number, since it is larger than the sum of its proper divisors (89919820503).

108523921065 is a wasteful number, since it uses less digits than its factorization.

108523921065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1033561168.

The product of its (nonzero) digits is 129600, while the sum is 42.

The spelling of 108523921065 in words is "one hundred eight billion, five hundred twenty-three million, nine hundred twenty-one thousand, sixty-five".