71824841168 has 20 divisors (see below), whose sum is σ = 139605242148. Its totient is φ = 35797681920.

The previous prime is 71824841167. The next prime is 71824841183. The reversal of 71824841168 is 86114842817.

It can be written as a sum of positive squares in 2 ways, for example, as 3363072064 + 68461769104 = 57992^2 + 261652^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71824841161) 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, 7166003 + ... + 7176018.

Almost surely, 2^71824841168 is an apocalyptic number.

It is an amenable number.

71824841168 is a deficient number, since it is larger than the sum of its proper divisors (67780400980).

71824841168 is a wasteful number, since it uses less digits than its factorization.

71824841168 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14342342 (or 14342336 counting only the distinct ones).

The product of its digits is 688128, while the sum is 50.

The spelling of 71824841168 in words is "seventy-one billion, eight hundred twenty-four million, eight hundred forty-one thousand, one hundred sixty-eight".