108199279591 has 4 divisors (see below), whose sum is σ = 116522301112. Its totient is φ = 99876258072.

The previous prime is 108199279567. The next prime is 108199279603. The reversal of 108199279591 is 195972991801.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 108199279591 - 2¹⁹ = 108198755303 is a prime.

It is a super-2 number, since 2×108199279591² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (108199279511) 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 3 ways as a sum of consecutive naturals, for example, 4161510741 + ... + 4161510766.

It is an arithmetic number, because the mean of its divisors is an integer number (29130575278).

Almost surely, 2^108199279591 is an apocalyptic number.

108199279591 is a deficient number, since it is larger than the sum of its proper divisors (8323021521).

108199279591 is an equidigital number, since it uses as much as digits as its factorization.

108199279591 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8323021520.

The product of its (nonzero) digits is 3674160, while the sum is 61.

The spelling of 108199279591 in words is "one hundred eight billion, one hundred ninety-nine million, two hundred seventy-nine thousand, five hundred ninety-one".