74454532147 has 4 divisors (see below), whose sum is σ = 74472915496. Its totient is φ = 74436148800.

The previous prime is 74454532123. The next prime is 74454532151. The reversal of 74454532147 is 74123545447.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 74123545447 = 7 ⋅10589077921.

It is a cyclic number.

It is not a de Polignac number, because 74454532147 - 2¹¹ = 74454530099 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 74454532097 and 74454532106.

It is not an unprimeable number, because it can be changed into a prime (74454532247) 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, 9185598 + ... + 9193699.

It is an arithmetic number, because the mean of its divisors is an integer number (18618228874).

Almost surely, 2^74454532147 is an apocalyptic number.

74454532147 is a deficient number, since it is larger than the sum of its proper divisors (18383349).

74454532147 is a wasteful number, since it uses less digits than its factorization.

74454532147 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18383348.

The product of its digits is 1881600, while the sum is 46.

The spelling of 74454532147 in words is "seventy-four billion, four hundred fifty-four million, five hundred thirty-two thousand, one hundred forty-seven".