12550770509 has 4 divisors (see below), whose sum is σ = 12568934400. Its totient is φ = 12532606620.

The previous prime is 12550770503. The next prime is 12550770521. The reversal of 12550770509 is 90507705521.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 12550770509 - 2⁴ = 12550770493 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12550770503) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9080909 + ... + 9082290.

It is an arithmetic number, because the mean of its divisors is an integer number (3142233600).

Almost surely, 2^12550770509 is an apocalyptic number.

It is an amenable number.

12550770509 is a deficient number, since it is larger than the sum of its proper divisors (18163891).

12550770509 is an equidigital number, since it uses as much as digits as its factorization.

12550770509 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18163890.

The product of its (nonzero) digits is 110250, while the sum is 41.

The spelling of 12550770509 in words is "twelve billion, five hundred fifty million, seven hundred seventy thousand, five hundred nine".