74257436681333 has 2 divisors, whose sum is σ = 74257436681334. Its totient is φ = 74257436681332.

The previous prime is 74257436681269. The next prime is 74257436681383. The reversal of 74257436681333 is 33318663475247.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 64152298497169 + 10105138184164 = 8009513^2 + 3178858^2 .

It is an emirp because it is prime and its reverse (33318663475247) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 74257436681333 - 2⁶ = 74257436681269 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (74257436681383) 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, 37128718340666 + 37128718340667.

It is an arithmetic number, because the mean of its divisors is an integer number (37128718340667).

Almost surely, 2^{74257436681333} is an apocalyptic number.

It is an amenable number.

74257436681333 is a deficient number, since it is larger than the sum of its proper divisors (1).

74257436681333 is an equidigital number, since it uses as much as digits as its factorization.

74257436681333 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 182891520, while the sum is 62.

The spelling of 74257436681333 in words is "seventy-four trillion, two hundred fifty-seven billion, four hundred thirty-six million, six hundred eighty-one thousand, three hundred thirty-three".