274378813766399 has 2 divisors, whose sum is σ = 274378813766400. Its totient is φ = 274378813766398.

The previous prime is 274378813766357. The next prime is 274378813766423. The reversal of 274378813766399 is 993667318873472.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 274378813766399 - 2¹² = 274378813762303 is a prime.

It is a super-2 number, since 2×274378813766399² (a number of 30 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (274378803766399) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 137189406883199 + 137189406883200.

It is an arithmetic number, because the mean of its divisors is an integer number (137189406883200).

Almost surely, 2^{274378813766399} is an apocalyptic number.

274378813766399 is a deficient number, since it is larger than the sum of its proper divisors (1).

274378813766399 is an equidigital number, since it uses as much as digits as its factorization.

274378813766399 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 13826598912, while the sum is 83.

The spelling of 274378813766399 in words is "two hundred seventy-four trillion, three hundred seventy-eight billion, eight hundred thirteen million, seven hundred sixty-six thousand, three hundred ninety-nine".