12403616553 has 72 divisors (see below), whose sum is σ = 19352736000. Its totient is φ = 7644499200.

The previous prime is 12403616543. The next prime is 12403616581. The reversal of 12403616553 is 35561630421.

12403616553 is a `hidden beast` number, since 1 + 2 + 40 + 3 + 61 + 6 + 553 = 666.

It is not a de Polignac number, because 12403616553 - 2⁵ = 12403616521 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (12403616543) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 24856698 + ... + 24857196.

It is an arithmetic number, because the mean of its divisors is an integer number (268788000).

Almost surely, 2^12403616553 is an apocalyptic number.

It is an amenable number.

12403616553 is a deficient number, since it is larger than the sum of its proper divisors (6949119447).

12403616553 is a wasteful number, since it uses less digits than its factorization.

12403616553 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 671 (or 627 counting only the distinct ones).

The product of its (nonzero) digits is 64800, while the sum is 36.

The spelling of 12403616553 in words is "twelve billion, four hundred three million, six hundred sixteen thousand, five hundred fifty-three".