13636120087 has 16 divisors (see below), whose sum is σ = 14525777952. Its totient is φ = 12756428800.

The previous prime is 13636120039. The next prime is 13636120117. The reversal of 13636120087 is 78002163631.

It is a cyclic number.

It is not a de Polignac number, because 13636120087 - 2¹¹ = 13636118039 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 (13636120007) 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, 1993968 + ... + 2000794.

It is an arithmetic number, because the mean of its divisors is an integer number (907861122).

Almost surely, 2^13636120087 is an apocalyptic number.

13636120087 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

13636120087 is a deficient number, since it is larger than the sum of its proper divisors (889657865).

13636120087 is a wasteful number, since it uses less digits than its factorization.

13636120087 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7538.

The product of its (nonzero) digits is 36288, while the sum is 37.

The spelling of 13636120087 in words is "thirteen billion, six hundred thirty-six million, one hundred twenty thousand, eighty-seven".