74198670569 has 2 divisors, whose sum is σ = 74198670570. Its totient is φ = 74198670568.

The previous prime is 74198670521. The next prime is 74198670571. The reversal of 74198670569 is 96507689147.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 57690275344 + 16508395225 = 240188^2 + 128485^2 .

It is a cyclic number.

It is not a de Polignac number, because 74198670569 - 2³² = 69903703273 is a prime.

It is a super-2 number, since 2×74198670569² (a number of 23 digits) contains 22 as substring.

Together with 74198670571, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (74198670599) 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, 37099335284 + 37099335285.

It is an arithmetic number, because the mean of its divisors is an integer number (37099335285).

Almost surely, 2^74198670569 is an apocalyptic number.

It is an amenable number.

74198670569 is a deficient number, since it is larger than the sum of its proper divisors (1).

74198670569 is an equidigital number, since it uses as much as digits as its factorization.

74198670569 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 22861440, while the sum is 62.

The spelling of 74198670569 in words is "seventy-four billion, one hundred ninety-eight million, six hundred seventy thousand, five hundred sixty-nine".