74327742673 has 2 divisors, whose sum is σ = 74327742674. Its totient is φ = 74327742672.

The previous prime is 74327742647. The next prime is 74327742787. The reversal of 74327742673 is 37624772347.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 67541772544 + 6785970129 = 259888^2 + 82377^2 .

It is a cyclic number.

It is not a de Polignac number, because 74327742673 - 2⁵ = 74327742641 is a prime.

It is a super-2 number, since 2×74327742673² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 74327742673.

It is not a weakly prime, because it can be changed into another prime (74327742473) 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, 37163871336 + 37163871337.

It is an arithmetic number, because the mean of its divisors is an integer number (37163871337).

Almost surely, 2^74327742673 is an apocalyptic number.

It is an amenable number.

74327742673 is a deficient number, since it is larger than the sum of its proper divisors (1).

74327742673 is an equidigital number, since it uses as much as digits as its factorization.

74327742673 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 8297856, while the sum is 52.

The spelling of 74327742673 in words is "seventy-four billion, three hundred twenty-seven million, seven hundred forty-two thousand, six hundred seventy-three".