386446101644639 has 2 divisors, whose sum is σ = 386446101644640. Its totient is φ = 386446101644638.

The previous prime is 386446101644599. The next prime is 386446101644683. The reversal of 386446101644639 is 936446101644683.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-386446101644639 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (386446101644699) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 193223050822319 + 193223050822320.

It is an arithmetic number, because the mean of its divisors is an integer number (193223050822320).

Almost surely, 2^{386446101644639} is an apocalyptic number.

386446101644639 is a deficient number, since it is larger than the sum of its proper divisors (1).

386446101644639 is an equidigital number, since it uses as much as digits as its factorization.

386446101644639 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 214990848, while the sum is 65.

The spelling of 386446101644639 in words is "three hundred eighty-six trillion, four hundred forty-six billion, one hundred one million, six hundred forty-four thousand, six hundred thirty-nine".