2591979277 has 2 divisors, whose sum is σ = 2591979278. Its totient is φ = 2591979276.

The previous prime is 2591979217. The next prime is 2591979281. The reversal of 2591979277 is 7729791952.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1412331561 + 1179647716 = 37581^2 + 34346^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2591979277 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2591979217) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1295989638 + 1295989639.

It is an arithmetic number, because the mean of its divisors is an integer number (1295989639).

Almost surely, 2^2591979277 is an apocalyptic number.

It is an amenable number.

2591979277 is a deficient number, since it is larger than the sum of its proper divisors (1).

2591979277 is an equidigital number, since it uses as much as digits as its factorization.

2591979277 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5000940, while the sum is 58.

The square root of 2591979277 is about 50911.4847259437. The cubic root of 2591979277 is about 1373.6534302652.

The spelling of 2591979277 in words is "two billion, five hundred ninety-one million, nine hundred seventy-nine thousand, two hundred seventy-seven".