13188216918215 has 16 divisors (see below), whose sum is σ = 15842651476608. Its totient is φ = 10539384773376.

The previous prime is 13188216918211. The next prime is 13188216918221. The reversal of 13188216918215 is 51281961288131.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 13188216918215 - 2² = 13188216918211 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13188216918211) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19492949 + ... + 20158161.

It is an arithmetic number, because the mean of its divisors is an integer number (990165717288).

Almost surely, 2^{13188216918215} is an apocalyptic number.

13188216918215 is a deficient number, since it is larger than the sum of its proper divisors (2654434558393).

13188216918215 is a wasteful number, since it uses less digits than its factorization.

13188216918215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 669418.

The product of its digits is 1658880, while the sum is 56.

The spelling of 13188216918215 in words is "thirteen trillion, one hundred eighty-eight billion, two hundred sixteen million, nine hundred eighteen thousand, two hundred fifteen".