2576131991 has 2 divisors, whose sum is σ = 2576131992. Its totient is φ = 2576131990.

The previous prime is 2576131981. The next prime is 2576132011. The reversal of 2576131991 is 1991316752.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2576131991 - 2¹⁰ = 2576130967 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2576131981) 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 as a sum of consecutive naturals, namely, 1288065995 + 1288065996.

It is an arithmetic number, because the mean of its divisors is an integer number (1288065996).

Almost surely, 2^2576131991 is an apocalyptic number.

2576131991 is a deficient number, since it is larger than the sum of its proper divisors (1).

2576131991 is an equidigital number, since it uses as much as digits as its factorization.

2576131991 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 102060, while the sum is 44.

The square root of 2576131991 is about 50755.6104386500. The cubic root of 2576131991 is about 1370.8482130795.

The spelling of 2576131991 in words is "two billion, five hundred seventy-six million, one hundred thirty-one thousand, nine hundred ninety-one".