641244657323 has 2 divisors, whose sum is σ = 641244657324. Its totient is φ = 641244657322.

The previous prime is 641244657281. The next prime is 641244657343. The reversal of 641244657323 is 323756442146.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 641244657323 - 2¹⁶ = 641244591787 is a prime.

It is a super-2 number, since 2×641244657323² (a number of 24 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (641244657343) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 320622328661 + 320622328662.

It is an arithmetic number, because the mean of its divisors is an integer number (320622328662).

Almost surely, 2^641244657323 is an apocalyptic number.

641244657323 is a deficient number, since it is larger than the sum of its proper divisors (1).

641244657323 is an equidigital number, since it uses as much as digits as its factorization.

641244657323 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2903040, while the sum is 47.

The spelling of 641244657323 in words is "six hundred forty-one billion, two hundred forty-four million, six hundred fifty-seven thousand, three hundred twenty-three".