12981572826 has 8 divisors (see below), whose sum is σ = 25963145664. Its totient is φ = 4327190940.

The previous prime is 12981572801. The next prime is 12981572833. The reversal of 12981572826 is 62827518921.

It is a sphenic number, since it is the product of 3 distinct primes.

12981572826 is an admirable 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, 1081797730 + ... + 1081797741.

It is an arithmetic number, because the mean of its divisors is an integer number (3245393208).

Almost surely, 2^12981572826 is an apocalyptic number.

12981572826 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

12981572826 is a wasteful number, since it uses less digits than its factorization.

12981572826 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2163595476.

The product of its digits is 967680, while the sum is 51.

The spelling of 12981572826 in words is "twelve billion, nine hundred eighty-one million, five hundred seventy-two thousand, eight hundred twenty-six".