74454845447 has 24 divisors (see below), whose sum is σ = 80510062320. Its totient is φ = 68821222400.

The previous prime is 74454845441. The next prime is 74454845467.

74454845447 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 74454845447 - 2⁸ = 74454845191 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 74454845392 and 74454845401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74454845441) 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 23 ways as a sum of consecutive naturals, for example, 32412803 + ... + 32415099.

It is an arithmetic number, because the mean of its divisors is an integer number (3354585930).

Almost surely, 2^74454845447 is an apocalyptic number.

74454845447 is a deficient number, since it is larger than the sum of its proper divisors (6055216873).

74454845447 is a wasteful number, since it uses less digits than its factorization.

74454845447 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4291 (or 4274 counting only the distinct ones).

The product of its digits is 40140800, while the sum is 56.

The spelling of 74454845447 in words is "seventy-four billion, four hundred fifty-four million, eight hundred forty-five thousand, four hundred forty-seven".