639342112610 has 8 divisors (see below), whose sum is σ = 1150815802716. Its totient is φ = 255736845040.

The previous prime is 639342112561. The next prime is 639342112681. The reversal of 639342112610 is 16211243936.

It can be written as a sum of positive squares in 2 ways, for example, as 638540033569 + 802079041 = 799087^2 + 28321^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 31967105621 + ... + 31967105640.

Almost surely, 2^639342112610 is an apocalyptic number.

639342112610 is a deficient number, since it is larger than the sum of its proper divisors (511473690106).

639342112610 is a wasteful number, since it uses less digits than its factorization.

639342112610 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63934211268.

The product of its (nonzero) digits is 46656, while the sum is 38.

The spelling of 639342112610 in words is "six hundred thirty-nine billion, three hundred forty-two million, one hundred twelve thousand, six hundred ten".