646550096579 has 2 divisors, whose sum is σ = 646550096580. Its totient is φ = 646550096578.

The previous prime is 646550096573. The next prime is 646550096611. The reversal of 646550096579 is 975690055646.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 646550096579 - 2⁸ = 646550096323 is a prime.

It is not a weakly prime, because it can be changed into another prime (646550096573) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 323275048289 + 323275048290.

It is an arithmetic number, because the mean of its divisors is an integer number (323275048290).

Almost surely, 2^646550096579 is an apocalyptic number.

646550096579 is a deficient number, since it is larger than the sum of its proper divisors (1).

646550096579 is an equidigital number, since it uses as much as digits as its factorization.

646550096579 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 61236000, while the sum is 62.

The spelling of 646550096579 in words is "six hundred forty-six billion, five hundred fifty million, ninety-six thousand, five hundred seventy-nine".