13959657985 has 16 divisors (see below), whose sum is σ = 20617341696. Its totient is φ = 8836003008.

The previous prime is 13959657913. The next prime is 13959658003. The reversal of 13959657985 is 58975695931.

It is not a de Polignac number, because 13959657985 - 2⁷ = 13959657857 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 13959657985.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 15339829 + ... + 15340738.

It is an arithmetic number, because the mean of its divisors is an integer number (1288583856).

Almost surely, 2^13959657985 is an apocalyptic number.

It is an amenable number.

13959657985 is a deficient number, since it is larger than the sum of its proper divisors (6657683711).

13959657985 is a wasteful number, since it uses less digits than its factorization.

13959657985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30680592.

The product of its digits is 91854000, while the sum is 67.

The spelling of 13959657985 in words is "thirteen billion, nine hundred fifty-nine million, six hundred fifty-seven thousand, nine hundred eighty-five".