74366572169 has 4 divisors (see below), whose sum is σ = 74373514260. Its totient is φ = 74359630080.

The previous prime is 74366572141. The next prime is 74366572193. The reversal of 74366572169 is 96127566347.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 96127566347 = 31 ⋅3100889237.

It can be written as a sum of positive squares in 2 ways, for example, as 41565015625 + 32801556544 = 203875^2 + 181112^2 .

It is a cyclic number.

It is not a de Polignac number, because 74366572169 - 2¹⁶ = 74366506633 is a prime.

It is a super-2 number, since 2×74366572169² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (74366572769) 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 in 3 ways as a sum of consecutive naturals, for example, 3454952 + ... + 3476409.

It is an arithmetic number, because the mean of its divisors is an integer number (18593378565).

Almost surely, 2^74366572169 is an apocalyptic number.

It is an amenable number.

74366572169 is a deficient number, since it is larger than the sum of its proper divisors (6942091).

74366572169 is a wasteful number, since it uses less digits than its factorization.

74366572169 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6942090.

The product of its digits is 11430720, while the sum is 56.

The spelling of 74366572169 in words is "seventy-four billion, three hundred sixty-six million, five hundred seventy-two thousand, one hundred sixty-nine".