12277423813 has 4 divisors (see below), whose sum is σ = 12286862028. Its totient is φ = 12267985600.

The previous prime is 12277423793. The next prime is 12277423831. The reversal of 12277423813 is 31832477221.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 3662428324 + 8614995489 = 60518^2 + 92817^2 .

It is a cyclic number.

It is not a de Polignac number, because 12277423813 - 2¹³ = 12277415621 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12277423843) 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, 4717156 + ... + 4719757.

It is an arithmetic number, because the mean of its divisors is an integer number (3071715507).

Almost surely, 2^12277423813 is an apocalyptic number.

It is an amenable number.

12277423813 is a deficient number, since it is larger than the sum of its proper divisors (9438215).

12277423813 is an equidigital number, since it uses as much as digits as its factorization.

12277423813 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9438214.

The product of its digits is 112896, while the sum is 40.

The spelling of 12277423813 in words is "twelve billion, two hundred seventy-seven million, four hundred twenty-three thousand, eight hundred thirteen".