639010998070 has 32 divisors (see below), whose sum is σ = 1154562912000. Its totient is φ = 254639569536.

The previous prime is 639010998013. The next prime is 639010998083. The reversal of 639010998070 is 70899010936.

It is a junction number, because it is equal to n+sod(n) for n = 639010997999 and 639010998017.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20895451 + ... + 20926009.

It is an arithmetic number, because the mean of its divisors is an integer number (36080091000).

Almost surely, 2^639010998070 is an apocalyptic number.

639010998070 is a deficient number, since it is larger than the sum of its proper divisors (515551913930).

639010998070 is a wasteful number, since it uses less digits than its factorization.

639010998070 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38392.

The product of its (nonzero) digits is 734832, while the sum is 52.

The spelling of 639010998070 in words is "six hundred thirty-nine billion, ten million, nine hundred ninety-eight thousand, seventy".