39731680899 has 10 divisors (see below), whose sum is σ = 59352264180. Its totient is φ = 26487787212.

The previous prime is 39731680889. The next prime is 39731680907. The reversal of 39731680899 is 99808613793.

39731680899 is a `hidden beast` number, since 397 + 3 + 168 + 0 + 89 + 9 = 666.

It is not a de Polignac number, because 39731680899 - 2⁸ = 39731680643 is a prime.

It is a super-2 number, since 2×39731680899² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (39731680819) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 245257209 + ... + 245257370.

It is an arithmetic number, because the mean of its divisors is an integer number (5935226418).

Almost surely, 2^39731680899 is an apocalyptic number.

39731680899 is a deficient number, since it is larger than the sum of its proper divisors (19620583281).

39731680899 is an equidigital number, since it uses as much as digits as its factorization.

39731680899 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 490514591 (or 490514582 counting only the distinct ones).

The product of its (nonzero) digits is 17635968, while the sum is 63.

The spelling of 39731680899 in words is "thirty-nine billion, seven hundred thirty-one million, six hundred eighty thousand, eight hundred ninety-nine".