74473437447 has 8 divisors (see below), whose sum is σ = 110331018480. Its totient is φ = 49648958280.

The previous prime is 74473437439. The next prime is 74473437503.

74473437447 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 74473437447 - 2³ = 74473437439 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 74473437393 and 74473437402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74473437427) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1379137704 + ... + 1379137757.

It is an arithmetic number, because the mean of its divisors is an integer number (13791377310).

Almost surely, 2^74473437447 is an apocalyptic number.

74473437447 is a deficient number, since it is larger than the sum of its proper divisors (35857581033).

74473437447 is a wasteful number, since it uses less digits than its factorization.

74473437447 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2758275470 (or 2758275464 counting only the distinct ones).

The product of its digits is 22127616, while the sum is 54.

The spelling of 74473437447 in words is "seventy-four billion, four hundred seventy-three million, four hundred thirty-seven thousand, four hundred forty-seven".