13117892640 has 96 divisors (see below), whose sum is σ = 41346256896. Its totient is φ = 3495997440.

The previous prime is 13117892633. The next prime is 13117892663. The reversal of 13117892640 is 4629871131.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (96).

It is a junction number, because it is equal to n+sod(n) for n = 13117892592 and 13117892601.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 891745 + ... + 906335.

It is an arithmetic number, because the mean of its divisors is an integer number (430690176).

Almost surely, 2^13117892640 is an apocalyptic number.

13117892640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13117892640 is an abundant number, since it is smaller than the sum of its proper divisors (28228364256).

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

13117892640 is a wasteful number, since it uses less digits than its factorization.

13117892640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16482 (or 16474 counting only the distinct ones).

The product of its (nonzero) digits is 72576, while the sum is 42.

The spelling of 13117892640 in words is "thirteen billion, one hundred seventeen million, eight hundred ninety-two thousand, six hundred forty".