71800718533 has 16 divisors (see below), whose sum is σ = 75477744000. Its totient is φ = 68170611520.

The previous prime is 71800718513. The next prime is 71800718573. The reversal of 71800718533 is 33581700817.

It is a cyclic number.

It is not a de Polignac number, because 71800718533 - 2¹³ = 71800710341 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 71800718533.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71800718513) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5541843 + ... + 5554783.

It is an arithmetic number, because the mean of its divisors is an integer number (4717359000).

Almost surely, 2^71800718533 is an apocalyptic number.

It is an amenable number.

71800718533 is a deficient number, since it is larger than the sum of its proper divisors (3677025467).

71800718533 is a wasteful number, since it uses less digits than its factorization.

71800718533 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14732.

The product of its (nonzero) digits is 141120, while the sum is 43.

The spelling of 71800718533 in words is "seventy-one billion, eight hundred million, seven hundred eighteen thousand, five hundred thirty-three".