71841696541 has 8 divisors (see below), whose sum is σ = 73598527800. Its totient is φ = 70085084160.

The previous prime is 71841696527. The next prime is 71841696557. The reversal of 71841696541 is 14569614817.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 12281294041 + 59560402500 = 110821^2 + 244050^2 .

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 71841696541 - 2⁹ = 71841696029 is a prime.

It is a super-2 number, since 2×71841696541² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71841696581) 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, 754095 + ... + 844003.

It is an arithmetic number, because the mean of its divisors is an integer number (9199815975).

Almost surely, 2^71841696541 is an apocalyptic number.

It is an amenable number.

71841696541 is a deficient number, since it is larger than the sum of its proper divisors (1756831259).

71841696541 is a wasteful number, since it uses less digits than its factorization.

71841696541 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 109439.

The product of its digits is 1451520, while the sum is 52.

The spelling of 71841696541 in words is "seventy-one billion, eight hundred forty-one million, six hundred ninety-six thousand, five hundred forty-one".