12731444532 has 36 divisors (see below), whose sum is σ = 33876067680. Its totient is φ = 4020455952.

The previous prime is 12731444521. The next prime is 12731444549. The reversal of 12731444532 is 23544413721.

12731444532 is a `hidden beast` number, since 1 + 2 + 73 + 14 + 44 + 532 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9305928 + ... + 9307295.

It is an arithmetic number, because the mean of its divisors is an integer number (941001880).

Almost surely, 2^12731444532 is an apocalyptic number.

12731444532 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12731444532 is an abundant number, since it is smaller than the sum of its proper divisors (21144623148).

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

12731444532 is a wasteful number, since it uses less digits than its factorization.

12731444532 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18613252 (or 18613247 counting only the distinct ones).

The product of its digits is 80640, while the sum is 36.

The spelling of 12731444532 in words is "twelve billion, seven hundred thirty-one million, four hundred forty-four thousand, five hundred thirty-two".