642813259199 has 2 divisors, whose sum is σ = 642813259200. Its totient is φ = 642813259198.

The previous prime is 642813259163. The next prime is 642813259223. The reversal of 642813259199 is 991952318246.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-642813259199 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (642813259139) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 321406629599 + 321406629600.

It is an arithmetic number, because the mean of its divisors is an integer number (321406629600).

Almost surely, 2^642813259199 is an apocalyptic number.

642813259199 is a deficient number, since it is larger than the sum of its proper divisors (1).

642813259199 is an equidigital number, since it uses as much as digits as its factorization.

642813259199 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8398080, while the sum is 59.

The spelling of 642813259199 in words is "six hundred forty-two billion, eight hundred thirteen million, two hundred fifty-nine thousand, one hundred ninety-nine".