11638856418087 has 16 divisors (see below), whose sum is σ = 16202429123328. Its totient is φ = 7417645561920.

The previous prime is 11638856418083. The next prime is 11638856418173. The reversal of 11638856418087 is 78081465883611.

11638856418087 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 11638856418087 - 2² = 11638856418083 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11638856418083) 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, 47990589 + ... + 48232502.

It is an arithmetic number, because the mean of its divisors is an integer number (1012651820208).

Almost surely, 2^{11638856418087} is an apocalyptic number.

11638856418087 is a deficient number, since it is larger than the sum of its proper divisors (4563572705241).

11638856418087 is a wasteful number, since it uses less digits than its factorization.

11638856418087 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 96224870.

The product of its (nonzero) digits is 61931520, while the sum is 66.

The spelling of 11638856418087 in words is "eleven trillion, six hundred thirty-eight billion, eight hundred fifty-six million, four hundred eighteen thousand, eighty-seven".