73143784328 has 16 divisors (see below), whose sum is σ = 143107404480. Its totient is φ = 34981809808.

The previous prime is 73143784319. The next prime is 73143784339. The reversal of 73143784328 is 82348734137.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 198760100 + ... + 198760467.

It is an arithmetic number, because the mean of its divisors is an integer number (8944212780).

Almost surely, 2^73143784328 is an apocalyptic number.

It is an amenable number.

73143784328 is a deficient number, since it is larger than the sum of its proper divisors (69963620152).

73143784328 is a wasteful number, since it uses less digits than its factorization.

73143784328 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 397520596 (or 397520592 counting only the distinct ones).

The product of its digits is 2709504, while the sum is 50.

The spelling of 73143784328 in words is "seventy-three billion, one hundred forty-three million, seven hundred eighty-four thousand, three hundred twenty-eight".