13214521365 has 16 divisors (see below), whose sum is σ = 21146505408. Its totient is φ = 7046654336.

The previous prime is 13214521343. The next prime is 13214521381. The reversal of 13214521365 is 56312541231.

It is a cyclic number.

It is not a de Polignac number, because 13214521365 - 2⁶ = 13214521301 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 37297 + ... + 166793.

It is an arithmetic number, because the mean of its divisors is an integer number (1321656588).

Almost surely, 2^13214521365 is an apocalyptic number.

13214521365 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

13214521365 is a deficient number, since it is larger than the sum of its proper divisors (7931984043).

13214521365 is a wasteful number, since it uses less digits than its factorization.

13214521365 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 136308.

The product of its digits is 21600, while the sum is 33.

The spelling of 13214521365 in words is "thirteen billion, two hundred fourteen million, five hundred twenty-one thousand, three hundred sixty-five".