13438387585 has 16 divisors (see below), whose sum is σ = 18447408000. Its totient is φ = 9206084736.

The previous prime is 13438387519. The next prime is 13438387603. The reversal of 13438387585 is 58578383431.

It is a cyclic number.

It is not a de Polignac number, because 13438387585 - 2²¹ = 13436290433 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 146295 + ... + 219724.

It is an arithmetic number, because the mean of its divisors is an integer number (1152963000).

Almost surely, 2^13438387585 is an apocalyptic number.

It is an amenable number.

13438387585 is a deficient number, since it is larger than the sum of its proper divisors (5009020415).

13438387585 is a wasteful number, since it uses less digits than its factorization.

13438387585 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 367080.

The product of its digits is 9676800, while the sum is 55.

The spelling of 13438387585 in words is "thirteen billion, four hundred thirty-eight million, three hundred eighty-seven thousand, five hundred eighty-five".