12731663508009 has 16 divisors (see below), whose sum is σ = 17533973422080. Its totient is φ = 8208902872080.

The previous prime is 12731663508001. The next prime is 12731663508043. The reversal of 12731663508009 is 90080536613721.

It is not a de Polignac number, because 12731663508009 - 2³ = 12731663508001 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12731663508001) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 42128497 + ... + 42429630.

It is an arithmetic number, because the mean of its divisors is an integer number (1095873338880).

Almost surely, 2^{12731663508009} is an apocalyptic number.

It is an amenable number.

12731663508009 is a deficient number, since it is larger than the sum of its proper divisors (4802309914071).

12731663508009 is a wasteful number, since it uses less digits than its factorization.

12731663508009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84559780.

The product of its (nonzero) digits is 1632960, while the sum is 51.

The spelling of 12731663508009 in words is "twelve trillion, seven hundred thirty-one billion, six hundred sixty-three million, five hundred eight thousand, nine".