12507512632009 has 16 divisors (see below), whose sum is σ = 13257113562000. Its totient is φ = 11759454074880.

The previous prime is 12507512632007. The next prime is 12507512632057. The reversal of 12507512632009 is 90023621570521.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 1673408721609 + 10834103910400 = 1293603^2 + 3291520^2 .

It is not a de Polignac number, because 12507512632009 - 2¹ = 12507512632007 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12507512632001) 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, 340331367 + ... + 340368115.

It is an arithmetic number, because the mean of its divisors is an integer number (828569597625).

Almost surely, 2^{12507512632009} is an apocalyptic number.

It is an amenable number.

12507512632009 is a deficient number, since it is larger than the sum of its proper divisors (749600929991).

12507512632009 is a wasteful number, since it uses less digits than its factorization.

12507512632009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57180.

The product of its (nonzero) digits is 226800, while the sum is 43.

The spelling of 12507512632009 in words is "twelve trillion, five hundred seven billion, five hundred twelve million, six hundred thirty-two thousand, nine".