18367904415779 has 2 divisors, whose sum is σ = 18367904415780. Its totient is φ = 18367904415778.

The previous prime is 18367904415719. The next prime is 18367904415781. The reversal of 18367904415779 is 97751440976381.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-18367904415779 is a prime.

Together with 18367904415781, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (18367904415709) 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, 9183952207889 + 9183952207890.

It is an arithmetic number, because the mean of its divisors is an integer number (9183952207890).

Almost surely, 2^{18367904415779} is an apocalyptic number.

18367904415779 is a deficient number, since it is larger than the sum of its proper divisors (1).

18367904415779 is an equidigital number, since it uses as much as digits as its factorization.

18367904415779 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 320060160, while the sum is 71.

The spelling of 18367904415779 in words is "eighteen trillion, three hundred sixty-seven billion, nine hundred four million, four hundred fifteen thousand, seven hundred seventy-nine".