13956903617 has 4 divisors (see below), whose sum is σ = 13989286656. Its totient is φ = 13924520580.

The previous prime is 13956903613. The next prime is 13956903629. The reversal of 13956903617 is 71630965931.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 13956903617 - 2² = 13956903613 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13956903613) 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, 16190873 + ... + 16191734.

It is an arithmetic number, because the mean of its divisors is an integer number (3497321664).

Almost surely, 2^13956903617 is an apocalyptic number.

It is an amenable number.

13956903617 is a deficient number, since it is larger than the sum of its proper divisors (32383039).

13956903617 is an equidigital number, since it uses as much as digits as its factorization.

13956903617 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32383038.

The product of its (nonzero) digits is 918540, while the sum is 50.

The spelling of 13956903617 in words is "thirteen billion, nine hundred fifty-six million, nine hundred three thousand, six hundred seventeen".