13900202645 has 24 divisors (see below), whose sum is σ = 19732442400. Its totient is φ = 9370005792.

The previous prime is 13900202633. The next prime is 13900202663. The reversal of 13900202645 is 54620200931.

It is a happy number.

It is not a de Polignac number, because 13900202645 - 2⁴ = 13900202629 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 466355 + ... + 495264.

It is an arithmetic number, because the mean of its divisors is an integer number (822185100).

Almost surely, 2^13900202645 is an apocalyptic number.

It is an amenable number.

13900202645 is a deficient number, since it is larger than the sum of its proper divisors (5832239755).

13900202645 is an equidigital number, since it uses as much as digits as its factorization.

13900202645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 961697 (or 961690 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 32.

The spelling of 13900202645 in words is "thirteen billion, nine hundred million, two hundred two thousand, six hundred forty-five".