12361768877 has 2 divisors, whose sum is σ = 12361768878. Its totient is φ = 12361768876.

The previous prime is 12361768789. The next prime is 12361768879. The reversal of 12361768877 is 77886716321.

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., 8524090276 + 3837678601 = 92326^2 + 61949^2 .

It is a cyclic number.

It is not a de Polignac number, because 12361768877 - 2²⁰ = 12360720301 is a prime.

It is a super-2 number, since 2×12361768877² (a number of 21 digits) contains 22 as substring.

Together with 12361768879, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12361768879) 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, 6180884438 + 6180884439.

It is an arithmetic number, because the mean of its divisors is an integer number (6180884439).

Almost surely, 2^12361768877 is an apocalyptic number.

It is an amenable number.

12361768877 is a deficient number, since it is larger than the sum of its proper divisors (1).

12361768877 is an equidigital number, since it uses as much as digits as its factorization.

12361768877 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4741632, while the sum is 56.

The spelling of 12361768877 in words is "twelve billion, three hundred sixty-one million, seven hundred sixty-eight thousand, eight hundred seventy-seven".