12508130709 has 6 divisors (see below), whose sum is σ = 18067299926. Its totient is φ = 8338753800.

The previous prime is 12508130707. The next prime is 12508130717. The reversal of 12508130709 is 90703180521.

12508130709 is a `hidden beast` number, since 12 + 508 + 130 + 7 + 0 + 9 = 666.

It can be written as a sum of positive squares in only one way, i.e., 10529838225 + 1978292484 = 102615^2 + 44478^2 .

It is not a de Polignac number, because 12508130709 - 2¹ = 12508130707 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12508130707) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 694896142 + ... + 694896159.

Almost surely, 2^12508130709 is an apocalyptic number.

It is an amenable number.

12508130709 is a deficient number, since it is larger than the sum of its proper divisors (5559169217).

12508130709 is a wasteful number, since it uses less digits than its factorization.

12508130709 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1389792307 (or 1389792304 counting only the distinct ones).

The product of its (nonzero) digits is 15120, while the sum is 36.

The spelling of 12508130709 in words is "twelve billion, five hundred eight million, one hundred thirty thousand, seven hundred nine".