74105012185 has 4 divisors (see below), whose sum is σ = 88926014628. Its totient is φ = 59284009744.

The previous prime is 74105012183. The next prime is 74105012197. The reversal of 74105012185 is 58121050147.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 31361930649 + 42743081536 = 177093^2 + 206744^2 .

It is a cyclic number.

It is not a de Polignac number, because 74105012185 - 2¹ = 74105012183 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 74105012185.

It is not an unprimeable number, because it can be changed into a prime (74105012183) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7410501214 + ... + 7410501223.

It is an arithmetic number, because the mean of its divisors is an integer number (22231503657).

Almost surely, 2^74105012185 is an apocalyptic number.

It is an amenable number.

74105012185 is a deficient number, since it is larger than the sum of its proper divisors (14821002443).

74105012185 is a wasteful number, since it uses less digits than its factorization.

74105012185 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14821002442.

The product of its (nonzero) digits is 11200, while the sum is 34.

The spelling of 74105012185 in words is "seventy-four billion, one hundred five million, twelve thousand, one hundred eighty-five".