12305655777 has 4 divisors (see below), whose sum is σ = 16407541040. Its totient is φ = 8203770516.

The previous prime is 12305655773. The next prime is 12305655781. The reversal of 12305655777 is 77755650321.

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 an interprime number because it is at equal distance from previous prime (12305655773) and next prime (12305655781).

It is not a de Polignac number, because 12305655777 - 2² = 12305655773 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12305655773) 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, 2050942627 + ... + 2050942632.

It is an arithmetic number, because the mean of its divisors is an integer number (4101885260).

Almost surely, 2^12305655777 is an apocalyptic number.

It is an amenable number.

12305655777 is a deficient number, since it is larger than the sum of its proper divisors (4101885263).

12305655777 is an equidigital number, since it uses as much as digits as its factorization.

12305655777 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4101885262.

The product of its (nonzero) digits is 1543500, while the sum is 48.

The spelling of 12305655777 in words is "twelve billion, three hundred five million, six hundred fifty-five thousand, seven hundred seventy-seven".