71789549947 has 8 divisors (see below), whose sum is σ = 73011049200. Its totient is φ = 70568208384.

The previous prime is 71789549939. The next prime is 71789549957. The reversal of 71789549947 is 74994598717.

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

It is a cyclic number.

It is not a de Polignac number, because 71789549947 - 2³ = 71789549939 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (71789549927) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1215403 + ... + 1273099.

It is an arithmetic number, because the mean of its divisors is an integer number (9126381150).

Almost surely, 2^71789549947 is an apocalyptic number.

71789549947 is a deficient number, since it is larger than the sum of its proper divisors (1221499253).

71789549947 is a wasteful number, since it uses less digits than its factorization.

71789549947 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78845.

The product of its digits is 160030080, while the sum is 70.

The spelling of 71789549947 in words is "seventy-one billion, seven hundred eighty-nine million, five hundred forty-nine thousand, nine hundred forty-seven".