71718544799 has 16 divisors (see below), whose sum is σ = 80183416320. Its totient is φ = 63597730560.

The previous prime is 71718544741. The next prime is 71718544811. The reversal of 71718544799 is 99744581717.

It is a cyclic number.

It is not a de Polignac number, because 71718544799 - 2¹⁶ = 71718479263 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71718544999) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 425042 + ... + 569295.

It is an arithmetic number, because the mean of its divisors is an integer number (5011463520).

Almost surely, 2^71718544799 is an apocalyptic number.

71718544799 is a gapful number since it is divisible by the number (79) formed by its first and last digit.

71718544799 is a deficient number, since it is larger than the sum of its proper divisors (8464871521).

71718544799 is a wasteful number, since it uses less digits than its factorization.

71718544799 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 994510.

The product of its digits is 17781120, while the sum is 62.

The spelling of 71718544799 in words is "seventy-one billion, seven hundred eighteen million, five hundred forty-four thousand, seven hundred ninety-nine".