638612160799 has 2 divisors, whose sum is σ = 638612160800. Its totient is φ = 638612160798.

The previous prime is 638612160727. The next prime is 638612160839. The reversal of 638612160799 is 997061216836.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 638612160799 - 2⁹ = 638612160287 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (638612130799) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 319306080399 + 319306080400.

It is an arithmetic number, because the mean of its divisors is an integer number (319306080400).

Almost surely, 2^638612160799 is an apocalyptic number.

638612160799 is a deficient number, since it is larger than the sum of its proper divisors (1).

638612160799 is an equidigital number, since it uses as much as digits as its factorization.

638612160799 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5878656, while the sum is 58.

The spelling of 638612160799 in words is "six hundred thirty-eight billion, six hundred twelve million, one hundred sixty thousand, seven hundred ninety-nine".