2616558979 has 4 divisors (see below), whose sum is σ = 2617215984. Its totient is φ = 2615901976.

The previous prime is 2616558947. The next prime is 2616558983. The reversal of 2616558979 is 9798556162.

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 2616558979 - 2⁵ = 2616558947 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2616555979) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 322492 + ... + 330505.

It is an arithmetic number, because the mean of its divisors is an integer number (654303996).

Almost surely, 2^2616558979 is an apocalyptic number.

2616558979 is a deficient number, since it is larger than the sum of its proper divisors (657005).

2616558979 is an equidigital number, since it uses as much as digits as its factorization.

2616558979 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 657004.

The product of its digits is 8164800, while the sum is 58.

The square root of 2616558979 is about 51152.3115704462. The cubic root of 2616558979 is about 1377.9818885977.

The spelling of 2616558979 in words is "two billion, six hundred sixteen million, five hundred fifty-eight thousand, nine hundred seventy-nine".