12507609137 has 2 divisors, whose sum is σ = 12507609138. Its totient is φ = 12507609136.

The previous prime is 12507609089. The next prime is 12507609181. The reversal of 12507609137 is 73190670521.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12030579856 + 477029281 = 109684^2 + 21841^2 .

It is an emirp because it is prime and its reverse (73190670521) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12507609137 - 2⁶ = 12507609073 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12507609094 and 12507609103.

It is not a weakly prime, because it can be changed into another prime (12507608137) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6253804568 + 6253804569.

It is an arithmetic number, because the mean of its divisors is an integer number (6253804569).

Almost surely, 2^12507609137 is an apocalyptic number.

It is an amenable number.

12507609137 is a deficient number, since it is larger than the sum of its proper divisors (1).

12507609137 is an equidigital number, since it uses as much as digits as its factorization.

12507609137 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 79380, while the sum is 41.

The spelling of 12507609137 in words is "twelve billion, five hundred seven million, six hundred nine thousand, one hundred thirty-seven".