2644052657 has 2 divisors, whose sum is σ = 2644052658. Its totient is φ = 2644052656.

The previous prime is 2644052629. The next prime is 2644052689. The reversal of 2644052657 is 7562504462.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2576171536 + 67881121 = 50756^2 + 8239^2 .

It is a cyclic number.

It is not a de Polignac number, because 2644052657 - 2¹⁶ = 2643987121 is a prime.

It is not a weakly prime, because it can be changed into another prime (2644052617) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1322026328 + 1322026329.

It is an arithmetic number, because the mean of its divisors is an integer number (1322026329).

Almost surely, 2^2644052657 is an apocalyptic number.

It is an amenable number.

2644052657 is a deficient number, since it is larger than the sum of its proper divisors (1).

2644052657 is an equidigital number, since it uses as much as digits as its factorization.

2644052657 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 403200, while the sum is 41.

The square root of 2644052657 is about 51420.3525561620. The cubic root of 2644052657 is about 1382.7914959229.

It can be divided in two parts, 26440 and 52657, that added together give a palindrome (79097).

The spelling of 2644052657 in words is "two billion, six hundred forty-four million, fifty-two thousand, six hundred fifty-seven".