12731373544 has 16 divisors (see below), whose sum is σ = 23885450820. Its totient is φ = 6361920000.

The previous prime is 12731373527. The next prime is 12731373553. The reversal of 12731373544 is 44537313721.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 10432171044 + 2299202500 = 102138^2 + 47950^2 .

It is a super-3 number, since 3×12731373544³ (a number of 31 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 12731373497 and 12731373506.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 456457 + ... + 483544.

Almost surely, 2^12731373544 is an apocalyptic number.

It is an amenable number.

12731373544 is a deficient number, since it is larger than the sum of its proper divisors (11154077276).

12731373544 is a wasteful number, since it uses less digits than its factorization.

12731373544 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 941700 (or 941696 counting only the distinct ones).

The product of its digits is 211680, while the sum is 40.

The spelling of 12731373544 in words is "twelve billion, seven hundred thirty-one million, three hundred seventy-three thousand, five hundred forty-four".