639919059970311 has 24 divisors (see below), whose sum is σ = 1008662223164544. Its totient is φ = 387712457721360.

The previous prime is 639919059970259. The next prime is 639919059970357. The reversal of 639919059970311 is 113079950919936.

It is a happy number.

639919059970311 is a `hidden beast` number, since 6 + 3 + 9 + 9 + 19 + 0 + 599 + 7 + 0 + 3 + 11 = 666.

It is not a de Polignac number, because 639919059970311 - 2⁶ = 639919059970247 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 639919059970311.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (639919059970381) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 976967571 + ... + 977622356.

It is an arithmetic number, because the mean of its divisors is an integer number (42027592631856).

Almost surely, 2^{639919059970311} is an apocalyptic number.

639919059970311 is a deficient number, since it is larger than the sum of its proper divisors (368743163194233).

639919059970311 is a wasteful number, since it uses less digits than its factorization.

639919059970311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1954593251 (or 1954593248 counting only the distinct ones).

The product of its (nonzero) digits is 111602610, while the sum is 72.

The spelling of 639919059970311 in words is "six hundred thirty-nine trillion, nine hundred nineteen billion, fifty-nine million, nine hundred seventy thousand, three hundred eleven".