2661326923 has 2 divisors, whose sum is σ = 2661326924. Its totient is φ = 2661326922.

The previous prime is 2661326893. The next prime is 2661326929. The reversal of 2661326923 is 3296231662.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2661326923 - 2⁵ = 2661326891 is a prime.

It is not a weakly prime, because it can be changed into another prime (2661326929) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1330663461 + 1330663462.

It is an arithmetic number, because the mean of its divisors is an integer number (1330663462).

Almost surely, 2^2661326923 is an apocalyptic number.

2661326923 is a deficient number, since it is larger than the sum of its proper divisors (1).

2661326923 is an equidigital number, since it uses as much as digits as its factorization.

2661326923 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 139968, while the sum is 40.

The square root of 2661326923 is about 51588.0501957575. The cubic root of 2661326923 is about 1385.7963373411.

The spelling of 2661326923 in words is "two billion, six hundred sixty-one million, three hundred twenty-six thousand, nine hundred twenty-three".