39959808501 has 16 divisors (see below), whose sum is σ = 54058633920. Its totient is φ = 26251090560.

The previous prime is 39959808491. The next prime is 39959808527. The reversal of 39959808501 is 10580895993.

It is not a de Polignac number, because 39959808501 - 2¹⁵ = 39959775733 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (39959808001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 160606 + ... + 325136.

It is an arithmetic number, because the mean of its divisors is an integer number (3378664620).

Almost surely, 2^39959808501 is an apocalyptic number.

It is an amenable number.

39959808501 is a deficient number, since it is larger than the sum of its proper divisors (14098825419).

39959808501 is a wasteful number, since it uses less digits than its factorization.

39959808501 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 165716.

The product of its (nonzero) digits is 3499200, while the sum is 57.

The spelling of 39959808501 in words is "thirty-nine billion, nine hundred fifty-nine million, eight hundred eight thousand, five hundred one".