13656323345 has 32 divisors (see below), whose sum is σ = 19208420352. Its totient is φ = 9125468352.

The previous prime is 13656323341. The next prime is 13656323353. The reversal of 13656323345 is 54332365631.

It is not a de Polignac number, because 13656323345 - 2² = 13656323341 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13656323341) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 656474 + ... + 676956.

It is an arithmetic number, because the mean of its divisors is an integer number (600263136).

Almost surely, 2^13656323345 is an apocalyptic number.

It is an amenable number.

13656323345 is a deficient number, since it is larger than the sum of its proper divisors (5552097007).

13656323345 is a wasteful number, since it uses less digits than its factorization.

13656323345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20981.

The product of its digits is 583200, while the sum is 41.

Adding to 13656323345 its reverse (54332365631), we get a palindrome (67988688976).

The spelling of 13656323345 in words is "thirteen billion, six hundred fifty-six million, three hundred twenty-three thousand, three hundred forty-five".