108979758145 has 4 divisors (see below), whose sum is σ = 130775709780. Its totient is φ = 87183806512.

The previous prime is 108979758113. The next prime is 108979758149. The reversal of 108979758145 is 541857979801.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 541857979801 = 31 ⋅17479289671.

It can be written as a sum of positive squares in 2 ways, for example, as 20113763329 + 88865994816 = 141823^2 + 298104^2 .

It is a cyclic number.

It is not a de Polignac number, because 108979758145 - 2⁵ = 108979758113 is a prime.

It is not an unprimeable number, because it can be changed into a prime (108979758149) 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, 10897975810 + ... + 10897975819.

It is an arithmetic number, because the mean of its divisors is an integer number (32693927445).

Almost surely, 2^108979758145 is an apocalyptic number.

It is an amenable number.

108979758145 is a deficient number, since it is larger than the sum of its proper divisors (21795951635).

108979758145 is an equidigital number, since it uses as much as digits as its factorization.

108979758145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21795951634.

The product of its (nonzero) digits is 25401600, while the sum is 64.

The spelling of 108979758145 in words is "one hundred eight billion, nine hundred seventy-nine million, seven hundred fifty-eight thousand, one hundred forty-five".