12553191444 has 12 divisors (see below), whose sum is σ = 29290780064. Its totient is φ = 4184397144.

The previous prime is 12553191407. The next prime is 12553191449. The reversal of 12553191444 is 44419135521.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12553191449) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 523049632 + ... + 523049655.

Almost surely, 2^12553191444 is an apocalyptic number.

It is an amenable number.

12553191444 is an abundant number, since it is smaller than the sum of its proper divisors (16737588620).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12553191444 is a wasteful number, since it uses less digits than its factorization.

12553191444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1046099294 (or 1046099292 counting only the distinct ones).

The product of its digits is 86400, while the sum is 39.

The spelling of 12553191444 in words is "twelve billion, five hundred fifty-three million, one hundred ninety-one thousand, four hundred forty-four".