108771920637 has 16 divisors (see below), whose sum is σ = 145710888000. Its totient is φ = 72173994624.

The previous prime is 108771920629. The next prime is 108771920639. The reversal of 108771920637 is 736029177801.

It is not a de Polignac number, because 108771920637 - 2³ = 108771920629 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 108771920637.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (108771920639) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2179914 + ... + 2229252.

It is an arithmetic number, because the mean of its divisors is an integer number (9106930500).

Almost surely, 2^108771920637 is an apocalyptic number.

It is an amenable number.

108771920637 is a deficient number, since it is larger than the sum of its proper divisors (36938967363).

108771920637 is a wasteful number, since it uses less digits than its factorization.

108771920637 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52780.

The product of its (nonzero) digits is 889056, while the sum is 51.

The spelling of 108771920637 in words is "one hundred eight billion, seven hundred seventy-one million, nine hundred twenty thousand, six hundred thirty-seven".