639143319359 has 2 divisors, whose sum is σ = 639143319360. Its totient is φ = 639143319358.

The previous prime is 639143319329. The next prime is 639143319421. The reversal of 639143319359 is 953913341936.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 639143319359 - 2²⁰ = 639142270783 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (639143319319) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 319571659679 + 319571659680.

It is an arithmetic number, because the mean of its divisors is an integer number (319571659680).

Almost surely, 2^639143319359 is an apocalyptic number.

639143319359 is a deficient number, since it is larger than the sum of its proper divisors (1).

639143319359 is an equidigital number, since it uses as much as digits as its factorization.

639143319359 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7085880, while the sum is 56.

The spelling of 639143319359 in words is "six hundred thirty-nine billion, one hundred forty-three million, three hundred nineteen thousand, three hundred fifty-nine".