74543234547 has 4 divisors (see below), whose sum is σ = 99390979400. Its totient is φ = 49695489696.

The previous prime is 74543234543. The next prime is 74543234569.

74543234547 is nontrivially palindromic in base 10.

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

It is not a de Polignac number, because 74543234547 - 2² = 74543234543 is a prime.

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

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 74543234496 and 74543234505.

It is not an unprimeable number, because it can be changed into a prime (74543234543) 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, 12423872422 + ... + 12423872427.

It is an arithmetic number, because the mean of its divisors is an integer number (24847744850).

Almost surely, 2^74543234547 is an apocalyptic number.

74543234547 is a deficient number, since it is larger than the sum of its proper divisors (24847744853).

74543234547 is a wasteful number, since it uses less digits than its factorization.

74543234547 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24847744852.

The product of its digits is 5644800, while the sum is 48.

The spelling of 74543234547 in words is "seventy-four billion, five hundred forty-three million, two hundred thirty-four thousand, five hundred forty-seven".