12403134644 has 6 divisors (see below), whose sum is σ = 21705485634. Its totient is φ = 6201567320.

The previous prime is 12403134643. The next prime is 12403134661. The reversal of 12403134644 is 44643130421.

It can be written as a sum of positive squares in only one way, i.e., 8098200100 + 4304934544 = 89990^2 + 65612^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 12403134644.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12403134641) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1550391827 + ... + 1550391834.

It is an arithmetic number, because the mean of its divisors is an integer number (3617580939).

Almost surely, 2^12403134644 is an apocalyptic number.

It is an amenable number.

12403134644 is a deficient number, since it is larger than the sum of its proper divisors (9302350990).

12403134644 is a wasteful number, since it uses less digits than its factorization.

12403134644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3100783665 (or 3100783663 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 32.

The spelling of 12403134644 in words is "twelve billion, four hundred three million, one hundred thirty-four thousand, six hundred forty-four".