74268013609 has 2 divisors, whose sum is σ = 74268013610. Its totient is φ = 74268013608.

The previous prime is 74268013591. The next prime is 74268013613. The reversal of 74268013609 is 90631086247.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 64514476009 + 9753537600 = 253997^2 + 98760^2 .

It is a cyclic number.

It is not a de Polignac number, because 74268013609 - 2¹⁵ = 74267980841 is a prime.

It is not a weakly prime, because it can be changed into another prime (74268013619) 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, 37134006804 + 37134006805.

It is an arithmetic number, because the mean of its divisors is an integer number (37134006805).

Almost surely, 2^74268013609 is an apocalyptic number.

It is an amenable number.

74268013609 is a deficient number, since it is larger than the sum of its proper divisors (1).

74268013609 is an equidigital number, since it uses as much as digits as its factorization.

74268013609 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 435456, while the sum is 46.

The spelling of 74268013609 in words is "seventy-four billion, two hundred sixty-eight million, thirteen thousand, six hundred nine".