74368503351809 has 2 divisors, whose sum is σ = 74368503351810. Its totient is φ = 74368503351808.

The previous prime is 74368503351787. The next prime is 74368503351829. The reversal of 74368503351809 is 90815330586347.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 44460423658225 + 29908079693584 = 6667865^2 + 5468828^2 .

It is a cyclic number.

It is not a de Polignac number, because 74368503351809 - 2⁴⁴ = 56776317307393 is a prime.

It is not a weakly prime, because it can be changed into another prime (74368503351829) 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, 37184251675904 + 37184251675905.

It is an arithmetic number, because the mean of its divisors is an integer number (37184251675905).

Almost surely, 2^{74368503351809} is an apocalyptic number.

It is an amenable number.

74368503351809 is a deficient number, since it is larger than the sum of its proper divisors (1).

74368503351809 is an equidigital number, since it uses as much as digits as its factorization.

74368503351809 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 65318400, while the sum is 62.

The spelling of 74368503351809 in words is "seventy-four trillion, three hundred sixty-eight billion, five hundred three million, three hundred fifty-one thousand, eight hundred nine".