6326400557 has 2 divisors, whose sum is σ = 6326400558. Its totient is φ = 6326400556.

The previous prime is 6326400527. The next prime is 6326400581. The reversal of 6326400557 is 7550046236.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6322476196 + 3924361 = 79514^2 + 1981^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6326400557 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 6326400557.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6326400517) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3163200278 + 3163200279.

It is an arithmetic number, because the mean of its divisors is an integer number (3163200279).

Almost surely, 2^6326400557 is an apocalyptic number.

It is an amenable number.

6326400557 is a deficient number, since it is larger than the sum of its proper divisors (1).

6326400557 is an equidigital number, since it uses as much as digits as its factorization.

6326400557 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 151200, while the sum is 38.

The square root of 6326400557 is about 79538.6733419662. The cubic root of 6326400557 is about 1849.4910269671.

The spelling of 6326400557 in words is "six billion, three hundred twenty-six million, four hundred thousand, five hundred fifty-seven".