74598722609 has 2 divisors, whose sum is σ = 74598722610. Its totient is φ = 74598722608.

The previous prime is 74598722603. The next prime is 74598722651. The reversal of 74598722609 is 90622789547.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 74459128384 + 139594225 = 272872^2 + 11815^2 .

It is a cyclic number.

It is not a de Polignac number, because 74598722609 - 2⁴ = 74598722593 is a prime.

It is not a weakly prime, because it can be changed into another prime (74598722603) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37299361304 + 37299361305.

It is an arithmetic number, because the mean of its divisors is an integer number (37299361305).

Almost surely, 2^74598722609 is an apocalyptic number.

It is an amenable number.

74598722609 is a deficient number, since it is larger than the sum of its proper divisors (1).

74598722609 is an equidigital number, since it uses as much as digits as its factorization.

74598722609 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 15240960, while the sum is 59.

The spelling of 74598722609 in words is "seventy-four billion, five hundred ninety-eight million, seven hundred twenty-two thousand, six hundred nine".