12986722218976 has 24 divisors (see below), whose sum is σ = 27891937493784. Its totient is φ = 5903055553920.

The previous prime is 12986722218961. The next prime is 12986722219001. The reversal of 12986722218976 is 67981222768921.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18447048255 + ... + 18447048958.

It is an arithmetic number, because the mean of its divisors is an integer number (1162164062241).

Almost surely, 2^{12986722218976} is an apocalyptic number.

12986722218976 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

12986722218976 is an abundant number, since it is smaller than the sum of its proper divisors (14905215274808).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12986722218976 is a wasteful number, since it uses less digits than its factorization.

12986722218976 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36894097234 (or 36894097226 counting only the distinct ones).

The product of its digits is 146313216, while the sum is 70.

Subtracting 12986722218976 from its reverse (67981222768921), we obtain a palindrome (54994500549945).

The spelling of 12986722218976 in words is "twelve trillion, nine hundred eighty-six billion, seven hundred twenty-two million, two hundred eighteen thousand, nine hundred seventy-six".