12553135544 has 32 divisors (see below), whose sum is σ = 23904491520. Its totient is φ = 6178730976.

The previous prime is 12553135541. The next prime is 12553135591. The reversal of 12553135544 is 44553135521.

It is a junction number, because it is equal to n+sod(n) for n = 12553135498 and 12553135507.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12553135541) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 884327 + ... + 898409.

It is an arithmetic number, because the mean of its divisors is an integer number (747015360).

Almost surely, 2^12553135544 is an apocalyptic number.

It is an amenable number.

12553135544 is a deficient number, since it is larger than the sum of its proper divisors (11351355976).

12553135544 is a wasteful number, since it uses less digits than its factorization.

12553135544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15819 (or 15815 counting only the distinct ones).

The product of its digits is 180000, while the sum is 38.

The spelling of 12553135544 in words is "twelve billion, five hundred fifty-three million, one hundred thirty-five thousand, five hundred forty-four".