12664453044 has 24 divisors (see below), whose sum is σ = 29602893600. Its totient is φ = 4213983904.

The previous prime is 12664453003. The next prime is 12664453051. The reversal of 12664453044 is 44035446621.

It is a junction number, because it is equal to n+sod(n) for n = 12664452993 and 12664453011.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 930519 + ... + 944030.

It is an arithmetic number, because the mean of its divisors is an integer number (1233453900).

Almost surely, 2^12664453044 is an apocalyptic number.

It is an amenable number.

12664453044 is an abundant number, since it is smaller than the sum of its proper divisors (16938440556).

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

12664453044 is a wasteful number, since it uses less digits than its factorization.

12664453044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1875119 (or 1875117 counting only the distinct ones).

The product of its (nonzero) digits is 276480, while the sum is 39.

Adding to 12664453044 its reverse (44035446621), we get a palindrome (56699899665).

The spelling of 12664453044 in words is "twelve billion, six hundred sixty-four million, four hundred fifty-three thousand, forty-four".