36779949917 has 2 divisors, whose sum is σ = 36779949918. Its totient is φ = 36779949916.

The previous prime is 36779949893. The next prime is 36779949919. The reversal of 36779949917 is 71994997763.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 20158036441 + 16621913476 = 141979^2 + 128926^2 .

It is a cyclic number.

It is not a de Polignac number, because 36779949917 - 2¹⁰ = 36779948893 is a prime.

Together with 36779949919, 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 (36779949919) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18389974958 + 18389974959.

It is an arithmetic number, because the mean of its divisors is an integer number (18389974959).

Almost surely, 2^36779949917 is an apocalyptic number.

It is an amenable number.

36779949917 is a deficient number, since it is larger than the sum of its proper divisors (1).

36779949917 is an equidigital number, since it uses as much as digits as its factorization.

36779949917 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 162030456, while the sum is 71.

The spelling of 36779949917 in words is "thirty-six billion, seven hundred seventy-nine million, nine hundred forty-nine thousand, nine hundred seventeen".