39920785206 has 16 divisors (see below), whose sum is σ = 80319665664. Its totient is φ = 13227245864.

The previous prime is 39920785193. The next prime is 39920785207. The reversal of 39920785206 is 60258702993.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (39920785207) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19919550 + ... + 19921553.

It is an arithmetic number, because the mean of its divisors is an integer number (5019979104).

Almost surely, 2^39920785206 is an apocalyptic number.

39920785206 is an abundant number, since it is smaller than the sum of its proper divisors (40398880458).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

39920785206 is a wasteful number, since it uses less digits than its factorization.

39920785206 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39841275.

The product of its (nonzero) digits is 1632960, while the sum is 51.

The spelling of 39920785206 in words is "thirty-nine billion, nine hundred twenty million, seven hundred eighty-five thousand, two hundred six".