71884997843 has 2 divisors, whose sum is σ = 71884997844. Its totient is φ = 71884997842.

The previous prime is 71884997839. The next prime is 71884997851. The reversal of 71884997843 is 34879948817.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 71884997843 - 2² = 71884997839 is a prime.

It is a super-2 number, since 2×71884997843² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (71884997143) 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 as a sum of consecutive naturals, namely, 35942498921 + 35942498922.

It is an arithmetic number, because the mean of its divisors is an integer number (35942498922).

Almost surely, 2^71884997843 is an apocalyptic number.

71884997843 is a deficient number, since it is larger than the sum of its proper divisors (1).

71884997843 is an equidigital number, since it uses as much as digits as its factorization.

71884997843 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 97542144, while the sum is 68.

The spelling of 71884997843 in words is "seventy-one billion, eight hundred eighty-four million, nine hundred ninety-seven thousand, eight hundred forty-three".