2581604611 has 2 divisors, whose sum is σ = 2581604612. Its totient is φ = 2581604610.

The previous prime is 2581604587. The next prime is 2581604633. The reversal of 2581604611 is 1164061852.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2581604611 - 2¹³ = 2581596419 is a prime.

It is a super-2 number, since 2×2581604611² = 13329364735072922642, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (2581604681) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1290802305 + 1290802306.

It is an arithmetic number, because the mean of its divisors is an integer number (1290802306).

Almost surely, 2^2581604611 is an apocalyptic number.

2581604611 is a deficient number, since it is larger than the sum of its proper divisors (1).

2581604611 is an equidigital number, since it uses as much as digits as its factorization.

2581604611 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 11520, while the sum is 34.

The square root of 2581604611 is about 50809.4933157181. The cubic root of 2581604611 is about 1371.8182494541.

The spelling of 2581604611 in words is "two billion, five hundred eighty-one million, six hundred four thousand, six hundred eleven".