12623406549 has 64 divisors (see below), whose sum is σ = 19633743360. Its totient is φ = 7149542400.

The previous prime is 12623406541. The next prime is 12623406563. The reversal of 12623406549 is 94560432621.

It is not a de Polignac number, because 12623406549 - 2³ = 12623406541 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12623406549.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12623406541) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 9702199 + ... + 9703499.

It is an arithmetic number, because the mean of its divisors is an integer number (306777240).

Almost surely, 2^12623406549 is an apocalyptic number.

It is an amenable number.

12623406549 is a deficient number, since it is larger than the sum of its proper divisors (7010336811).

12623406549 is a wasteful number, since it uses less digits than its factorization.

12623406549 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1742.

The product of its (nonzero) digits is 311040, while the sum is 42.

The spelling of 12623406549 in words is "twelve billion, six hundred twenty-three million, four hundred six thousand, five hundred forty-nine".