108055991505 has 128 divisors (see below), whose sum is σ = 222187401216. Its totient is φ = 43539148800.

The previous prime is 108055991489. The next prime is 108055991509. The reversal of 108055991505 is 505199550801.

It is not a de Polignac number, because 108055991505 - 2⁴ = 108055991489 is a prime.

It is not an unprimeable number, because it can be changed into a prime (108055991509) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 6796165 + ... + 6812045.

It is an arithmetic number, because the mean of its divisors is an integer number (1735839072).

Almost surely, 2^108055991505 is an apocalyptic number.

108055991505 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

108055991505 is an abundant number, since it is smaller than the sum of its proper divisors (114131409711).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

108055991505 is a wasteful number, since it uses less digits than its factorization.

108055991505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16087.

The product of its (nonzero) digits is 405000, while the sum is 48.

The spelling of 108055991505 in words is "one hundred eight billion, fifty-five million, nine hundred ninety-one thousand, five hundred five".