12646680044 has 24 divisors (see below), whose sum is σ = 22255833600. Its totient is φ = 6287908176.

The previous prime is 12646680043. The next prime is 12646680049. The reversal of 12646680044 is 44008664621.

It is a super-2 number, since 2×12646680044² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 12646679983 and 12646680010.

It is not an unprimeable number, because it can be changed into a prime (12646680043) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1816979 + ... + 1823925.

It is an arithmetic number, because the mean of its divisors is an integer number (927326400).

Almost surely, 2^12646680044 is an apocalyptic number.

It is an amenable number.

12646680044 is a deficient number, since it is larger than the sum of its proper divisors (9609153556).

12646680044 is a wasteful number, since it uses less digits than its factorization.

12646680044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9437 (or 9435 counting only the distinct ones).

The product of its (nonzero) digits is 221184, while the sum is 41.

The spelling of 12646680044 in words is "twelve billion, six hundred forty-six million, six hundred eighty thousand, forty-four".