55791108979 has 4 divisors (see below), whose sum is σ = 55791600984. Its totient is φ = 55790616976.

The previous prime is 55791108953. The next prime is 55791109001. The reversal of 55791108979 is 97980119755.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 55791108979 - 2²⁵ = 55757554547 is a prime.

It is a super-2 number, since 2×55791108979² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55791198979) 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, 19884 + ... + 334630.

It is an arithmetic number, because the mean of its divisors is an integer number (13947900246).

Almost surely, 2^55791108979 is an apocalyptic number.

55791108979 is a deficient number, since it is larger than the sum of its proper divisors (492005).

55791108979 is a wasteful number, since it uses less digits than its factorization.

55791108979 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 492004.

The product of its (nonzero) digits is 7144200, while the sum is 61.

The spelling of 55791108979 in words is "fifty-five billion, seven hundred ninety-one million, one hundred eight thousand, nine hundred seventy-nine".