2655633961 has 2 divisors, whose sum is σ = 2655633962. Its totient is φ = 2655633960.

The previous prime is 2655633949. The next prime is 2655634031. The reversal of 2655633961 is 1693365562.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2653795225 + 1838736 = 51515^2 + 1356^2 .

It is a cyclic number.

It is not a de Polignac number, because 2655633961 - 2²⁵ = 2622079529 is a prime.

It is not a weakly prime, because it can be changed into another prime (2655633161) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1327816980 + 1327816981.

It is an arithmetic number, because the mean of its divisors is an integer number (1327816981).

Almost surely, 2^2655633961 is an apocalyptic number.

It is an amenable number.

2655633961 is a deficient number, since it is larger than the sum of its proper divisors (1).

2655633961 is an equidigital number, since it uses as much as digits as its factorization.

2655633961 is an evil number, because the sum of its binary digits is even.

The product of its digits is 874800, while the sum is 46.

The square root of 2655633961 is about 51532.8435175083. The cubic root of 2655633961 is about 1384.8074925216.

The spelling of 2655633961 in words is "two billion, six hundred fifty-five million, six hundred thirty-three thousand, nine hundred sixty-one".