13965907640 has 64 divisors (see below), whose sum is σ = 31613673600. Its totient is φ = 5552612352.

The previous prime is 13965907577. The next prime is 13965907699. The reversal of 13965907640 is 4670956931.

13965907640 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7006484 + ... + 7008476.

It is an arithmetic number, because the mean of its divisors is an integer number (493963650).

Almost surely, 2^13965907640 is an apocalyptic number.

13965907640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13965907640 is an abundant number, since it is smaller than the sum of its proper divisors (17647765960).

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

13965907640 is a wasteful number, since it uses less digits than its factorization.

13965907640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2976 (or 2972 counting only the distinct ones).

The product of its (nonzero) digits is 1224720, while the sum is 50.

The spelling of 13965907640 in words is "thirteen billion, nine hundred sixty-five million, nine hundred seven thousand, six hundred forty".