71715864443 has 4 divisors (see below), whose sum is σ = 73383675288. Its totient is φ = 70048053600.

The previous prime is 71715864419. The next prime is 71715864491. The reversal of 71715864443 is 34446851717.

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

It is a cyclic number.

It is not a de Polignac number, because 71715864443 - 2⁶ = 71715864379 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 71715864391 and 71715864400.

It is not an unprimeable number, because it can be changed into a prime (71715864413) 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, 833905358 + ... + 833905443.

It is an arithmetic number, because the mean of its divisors is an integer number (18345918822).

Almost surely, 2^71715864443 is an apocalyptic number.

71715864443 is a deficient number, since it is larger than the sum of its proper divisors (1667810845).

71715864443 is a wasteful number, since it uses less digits than its factorization.

71715864443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1667810844.

The product of its digits is 2257920, while the sum is 50.

The spelling of 71715864443 in words is "seventy-one billion, seven hundred fifteen million, eight hundred sixty-four thousand, four hundred forty-three".