74393426539 has 2 divisors, whose sum is σ = 74393426540. Its totient is φ = 74393426538.

The previous prime is 74393426431. The next prime is 74393426563. The reversal of 74393426539 is 93562439347.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 74393426539 - 2⁹ = 74393426027 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 74393426539.

It is not a weakly prime, because it can be changed into another prime (74393426599) 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, 37196713269 + 37196713270.

It is an arithmetic number, because the mean of its divisors is an integer number (37196713270).

Almost surely, 2^74393426539 is an apocalyptic number.

74393426539 is a deficient number, since it is larger than the sum of its proper divisors (1).

74393426539 is an equidigital number, since it uses as much as digits as its factorization.

74393426539 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 14696640, while the sum is 55.

The spelling of 74393426539 in words is "seventy-four billion, three hundred ninety-three million, four hundred twenty-six thousand, five hundred thirty-nine".