13615899385 has 32 divisors (see below), whose sum is σ = 18037862784. Its totient is φ = 9784320000.

The previous prime is 13615899347. The next prime is 13615899413. The reversal of 13615899385 is 58399851631.

13615899385 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a de Polignac number, because none of the positive numbers 2^k-13615899385 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3036345 + ... + 3040825.

It is an arithmetic number, because the mean of its divisors is an integer number (563683212).

Almost surely, 2^13615899385 is an apocalyptic number.

It is an amenable number.

13615899385 is a deficient number, since it is larger than the sum of its proper divisors (4421963399).

13615899385 is a wasteful number, since it uses less digits than its factorization.

13615899385 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5145.

The product of its digits is 6998400, while the sum is 58.

The spelling of 13615899385 in words is "thirteen billion, six hundred fifteen million, eight hundred ninety-nine thousand, three hundred eighty-five".