2615232661 has 2 divisors, whose sum is σ = 2615232662. Its totient is φ = 2615232660.

The previous prime is 2615232647. The next prime is 2615232701. The reversal of 2615232661 is 1662325162.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1431184561 + 1184048100 = 37831^2 + 34410^2 .

It is a cyclic number.

It is not a de Polignac number, because 2615232661 - 2⁷ = 2615232533 is a prime.

It is a super-2 number, since 2×2615232661² = 13678883742322281842, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2615232161) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1307616330 + 1307616331.

It is an arithmetic number, because the mean of its divisors is an integer number (1307616331).

Almost surely, 2^2615232661 is an apocalyptic number.

It is an amenable number.

2615232661 is a deficient number, since it is larger than the sum of its proper divisors (1).

2615232661 is an equidigital number, since it uses as much as digits as its factorization.

2615232661 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 25920, while the sum is 34.

The square root of 2615232661 is about 51139.3455276854. The cubic root of 2615232661 is about 1377.7490190043.

The spelling of 2615232661 in words is "two billion, six hundred fifteen million, two hundred thirty-two thousand, six hundred sixty-one".