74424413385 has 64 divisors (see below), whose sum is σ = 151247001600. Its totient is φ = 34014603456.

The previous prime is 74424413317. The next prime is 74424413417. The reversal of 74424413385 is 58331442447.

74424413385 is a `hidden beast` number, since 74 + 4 + 244 + 1 + 338 + 5 = 666.

It is not a de Polignac number, because 74424413385 - 2¹⁴ = 74424397001 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 74424413385.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 6286842 + ... + 6298668.

It is an arithmetic number, because the mean of its divisors is an integer number (2363234400).

Almost surely, 2^74424413385 is an apocalyptic number.

It is an amenable number.

74424413385 is an abundant number, since it is smaller than the sum of its proper divisors (76822588215).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

74424413385 is a wasteful number, since it uses less digits than its factorization.

74424413385 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18507 (or 18501 counting only the distinct ones).

The product of its digits is 1290240, while the sum is 45.

The spelling of 74424413385 in words is "seventy-four billion, four hundred twenty-four million, four hundred thirteen thousand, three hundred eighty-five".