13155984587 has 12 divisors (see below), whose sum is σ = 13562478216. Its totient is φ = 12761305920.

The previous prime is 13155984563. The next prime is 13155984601. The reversal of 13155984587 is 78548955131.

It is not a de Polignac number, because 13155984587 - 2²² = 13151790283 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13155983587) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 438623 + ... + 467655.

It is an arithmetic number, because the mean of its divisors is an integer number (1130206518).

Almost surely, 2^13155984587 is an apocalyptic number.

13155984587 is a deficient number, since it is larger than the sum of its proper divisors (406493629).

13155984587 is an equidigital number, since it uses as much as digits as its factorization.

13155984587 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29438 (or 29401 counting only the distinct ones).

The product of its digits is 6048000, while the sum is 56.

The spelling of 13155984587 in words is "thirteen billion, one hundred fifty-five million, nine hundred eighty-four thousand, five hundred eighty-seven".