71884998065 has 16 divisors (see below), whose sum is σ = 86753721600. Its totient is φ = 57180876672.

The previous prime is 71884998047. The next prime is 71884998071. The reversal of 71884998065 is 56089948817.

It is a cyclic number.

It is not a de Polignac number, because 71884998065 - 2²⁶ = 71817889201 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 71884997992 and 71884998010.

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 15 ways as a sum of consecutive naturals, for example, 794726 + ... + 880544.

It is an arithmetic number, because the mean of its divisors is an integer number (5422107600).

Almost surely, 2^71884998065 is an apocalyptic number.

It is an amenable number.

71884998065 is a deficient number, since it is larger than the sum of its proper divisors (14868723535).

71884998065 is a wasteful number, since it uses less digits than its factorization.

71884998065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86776.

The product of its (nonzero) digits is 34836480, while the sum is 65.

The spelling of 71884998065 in words is "seventy-one billion, eight hundred eighty-four million, nine hundred ninety-eight thousand, sixty-five".