639587068101 has 12 divisors (see below), whose sum is σ = 925684669728. Its totient is φ = 425543679144.

The previous prime is 639587068097. The next prime is 639587068201. The reversal of 639587068101 is 101860785936.

It is not a de Polignac number, because 639587068101 - 2² = 639587068097 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (639587068201) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 70636855 + ... + 70645908.

It is an arithmetic number, because the mean of its divisors is an integer number (77140389144).

Almost surely, 2^639587068101 is an apocalyptic number.

It is an amenable number.

639587068101 is a deficient number, since it is larger than the sum of its proper divisors (286097601627).

639587068101 is a wasteful number, since it uses less digits than its factorization.

639587068101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 141283272 (or 141283269 counting only the distinct ones).

The product of its (nonzero) digits is 2177280, while the sum is 54.

The spelling of 639587068101 in words is "six hundred thirty-nine billion, five hundred eighty-seven million, sixty-eight thousand, one hundred one".