2611559651 has 2 divisors, whose sum is σ = 2611559652. Its totient is φ = 2611559650.

The previous prime is 2611559603. The next prime is 2611559659. The reversal of 2611559651 is 1569551162.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2611559651 - 2²⁶ = 2544450787 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2611559599 and 2611559608.

It is not a weakly prime, because it can be changed into another prime (2611559659) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1305779825 + 1305779826.

It is an arithmetic number, because the mean of its divisors is an integer number (1305779826).

Almost surely, 2^2611559651 is an apocalyptic number.

2611559651 is a deficient number, since it is larger than the sum of its proper divisors (1).

2611559651 is an equidigital number, since it uses as much as digits as its factorization.

2611559651 is an evil number, because the sum of its binary digits is even.

The product of its digits is 81000, while the sum is 41.

The square root of 2611559651 is about 51103.4211281397. The cubic root of 2611559651 is about 1377.1037154403.

The spelling of 2611559651 in words is "two billion, six hundred eleven million, five hundred fifty-nine thousand, six hundred fifty-one".