108198155079 has 128 divisors (see below), whose sum is σ = 197309235200. Its totient is φ = 57228716160.

The previous prime is 108198155063. The next prime is 108198155089. The reversal of 108198155079 is 970551891801.

It is a happy number.

108198155079 is a `hidden beast` number, since 1 + 0 + 8 + 1 + 9 + 81 + 550 + 7 + 9 = 666.

It is not a de Polignac number, because 108198155079 - 2⁴ = 108198155063 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (108198155029) 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, 30554049 + ... + 30557589.

It is an arithmetic number, because the mean of its divisors is an integer number (1541478400).

Almost surely, 2^108198155079 is an apocalyptic number.

108198155079 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

108198155079 is a deficient number, since it is larger than the sum of its proper divisors (89111080121).

108198155079 is a wasteful number, since it uses less digits than its factorization.

108198155079 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3770 (or 3764 counting only the distinct ones).

The product of its (nonzero) digits is 907200, while the sum is 54.

The spelling of 108198155079 in words is "one hundred eight billion, one hundred ninety-eight million, one hundred fifty-five thousand, seventy-nine".