12344772877 has 2 divisors, whose sum is σ = 12344772878. Its totient is φ = 12344772876.

The previous prime is 12344772767. The next prime is 12344772883. The reversal of 12344772877 is 77827744321.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8583281316 + 3761491561 = 92646^2 + 61331^2 .

It is a cyclic number.

It is not a de Polignac number, because 12344772877 - 2¹¹ = 12344770829 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12344752877) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6172386438 + 6172386439.

It is an arithmetic number, because the mean of its divisors is an integer number (6172386439).

Almost surely, 2^12344772877 is an apocalyptic number.

It is an amenable number.

12344772877 is a deficient number, since it is larger than the sum of its proper divisors (1).

12344772877 is an equidigital number, since it uses as much as digits as its factorization.

12344772877 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3687936, while the sum is 52.

The spelling of 12344772877 in words is "twelve billion, three hundred forty-four million, seven hundred seventy-two thousand, eight hundred seventy-seven".