12150735647509 has 2 divisors, whose sum is σ = 12150735647510. Its totient is φ = 12150735647508.

The previous prime is 12150735647507. The next prime is 12150735647539. The reversal of 12150735647509 is 90574653705121.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12140890046884 + 9845600625 = 3484378^2 + 99225^2 .

It is an emirp because it is prime and its reverse (90574653705121) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12150735647509 - 2¹ = 12150735647507 is a prime.

Together with 12150735647507, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 12150735647509.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12150735647507) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6075367823754 + 6075367823755.

It is an arithmetic number, because the mean of its divisors is an integer number (6075367823755).

Almost surely, 2^{12150735647509} is an apocalyptic number.

It is an amenable number.

12150735647509 is a deficient number, since it is larger than the sum of its proper divisors (1).

12150735647509 is an equidigital number, since it uses as much as digits as its factorization.

12150735647509 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7938000, while the sum is 55.

The spelling of 12150735647509 in words is "twelve trillion, one hundred fifty billion, seven hundred thirty-five million, six hundred forty-seven thousand, five hundred nine".