13388891557 has 16 divisors (see below), whose sum is σ = 14216713920. Its totient is φ = 12573792000.

The previous prime is 13388891533. The next prime is 13388891587. The reversal of 13388891557 is 75519888331.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 13388891557 - 2¹¹ = 13388889509 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13388891587) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1236507 + ... + 1247287.

It is an arithmetic number, because the mean of its divisors is an integer number (888544620).

Almost surely, 2^13388891557 is an apocalyptic number.

It is an amenable number.

13388891557 is a deficient number, since it is larger than the sum of its proper divisors (827822363).

13388891557 is a wasteful number, since it uses less digits than its factorization.

13388891557 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11364.

The product of its digits is 7257600, while the sum is 58.

The spelling of 13388891557 in words is "thirteen billion, three hundred eighty-eight million, eight hundred ninety-one thousand, five hundred fifty-seven".