12403643452634 has 24 divisors (see below), whose sum is σ = 21834623955348. Its totient is φ = 5268804293760.

The previous prime is 12403643452621. The next prime is 12403643452639. The reversal of 12403643452634 is 43625434630421.

It can be written as a sum of positive squares in 2 ways, for example, as 11908386427609 + 495257025025 = 3450853^2 + 703745^2 .

It is not an unprimeable number, because it can be changed into a prime (12403643452639) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 560023397 + ... + 560045544.

Almost surely, 2^{12403643452634} is an apocalyptic number.

12403643452634 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

12403643452634 is a deficient number, since it is larger than the sum of its proper divisors (9430980502714).

12403643452634 is a wasteful number, since it uses less digits than its factorization.

12403643452634 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1120069070 (or 1120069063 counting only the distinct ones).

The product of its (nonzero) digits is 4976640, while the sum is 47.

The spelling of 12403643452634 in words is "twelve trillion, four hundred three billion, six hundred forty-three million, four hundred fifty-two thousand, six hundred thirty-four".