74473037447 has 4 divisors (see below), whose sum is σ = 74481664656. Its totient is φ = 74464410240.

The previous prime is 74473037371. The next prime is 74473037461.

74473037447 is nontrivially palindromic in base 10.

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

It is a cyclic number.

It is not a de Polignac number, because 74473037447 - 2¹⁰ = 74473036423 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 74473037395 and 74473037404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74473037467) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4300643 + ... + 4317924.

It is an arithmetic number, because the mean of its divisors is an integer number (18620416164).

Almost surely, 2^74473037447 is an apocalyptic number.

74473037447 is a deficient number, since it is larger than the sum of its proper divisors (8627209).

74473037447 is an equidigital number, since it uses as much as digits as its factorization.

74473037447 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8627208.

The product of its (nonzero) digits is 5531904, while the sum is 50.

The spelling of 74473037447 in words is "seventy-four billion, four hundred seventy-three million, thirty-seven thousand, four hundred forty-seven".