71784343834 has 8 divisors (see below), whose sum is σ = 123058875168. Its totient is φ = 30764718780.

The previous prime is 71784343819. The next prime is 71784343847. The reversal of 71784343834 is 43834348717.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2563726552 + ... + 2563726579.

It is an arithmetic number, because the mean of its divisors is an integer number (15382359396).

Almost surely, 2^71784343834 is an apocalyptic number.

71784343834 is a deficient number, since it is larger than the sum of its proper divisors (51274531334).

71784343834 is a wasteful number, since it uses less digits than its factorization.

71784343834 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5127453140.

The product of its digits is 5419008, while the sum is 52.

The spelling of 71784343834 in words is "seventy-one billion, seven hundred eighty-four million, three hundred forty-three thousand, eight hundred thirty-four".