74374321669 has 2 divisors, whose sum is σ = 74374321670. Its totient is φ = 74374321668.

The previous prime is 74374321667. The next prime is 74374321673. The reversal of 74374321669 is 96612347347.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 73975840225 + 398481444 = 271985^2 + 19962^2 .

It is a cyclic number.

It is not a de Polignac number, because 74374321669 - 2¹ = 74374321667 is a prime.

It is a super-2 number, since 2×74374321669² (a number of 23 digits) contains 22 as substring.

Together with 74374321667, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (74374321661) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37187160834 + 37187160835.

It is an arithmetic number, because the mean of its divisors is an integer number (37187160835).

Almost surely, 2^74374321669 is an apocalyptic number.

It is an amenable number.

74374321669 is a deficient number, since it is larger than the sum of its proper divisors (1).

74374321669 is an equidigital number, since it uses as much as digits as its factorization.

74374321669 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4572288, while the sum is 52.

The spelling of 74374321669 in words is "seventy-four billion, three hundred seventy-four million, three hundred twenty-one thousand, six hundred sixty-nine".