71691814841 has 8 divisors (see below), whose sum is σ = 72776501568. Its totient is φ = 70609210000.

The previous prime is 71691814823. The next prime is 71691814907. The reversal of 71691814841 is 14841819617.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 71691814841 - 2¹⁸ = 71691552697 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 71691814841.

It is not an unprimeable number, because it can be changed into a prime (71691813841) 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 7 ways as a sum of consecutive naturals, for example, 451010 + ... + 588891.

It is an arithmetic number, because the mean of its divisors is an integer number (9097062696).

Almost surely, 2^71691814841 is an apocalyptic number.

71691814841 is a gapful number since it is divisible by the number (71) formed by its first and last digit.

It is an amenable number.

71691814841 is a deficient number, since it is larger than the sum of its proper divisors (1084686727).

71691814841 is a wasteful number, since it uses less digits than its factorization.

71691814841 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1040943.

The product of its digits is 387072, while the sum is 50.

The spelling of 71691814841 in words is "seventy-one billion, six hundred ninety-one million, eight hundred fourteen thousand, eight hundred forty-one".