13640135516 has 12 divisors (see below), whose sum is σ = 27280271088. Its totient is φ = 5845772352.

The previous prime is 13640135513. The next prime is 13640135527. The reversal of 13640135516 is 61553104631.

13640135516 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13640135513) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 243573821 + ... + 243573876.

It is an arithmetic number, because the mean of its divisors is an integer number (2273355924).

Almost surely, 2^13640135516 is an apocalyptic number.

It is an amenable number.

13640135516 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13640135516 is a wasteful number, since it uses less digits than its factorization.

13640135516 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 487147708 (or 487147706 counting only the distinct ones).

The product of its (nonzero) digits is 32400, while the sum is 35.

The spelling of 13640135516 in words is "thirteen billion, six hundred forty million, one hundred thirty-five thousand, five hundred sixteen".