71817410081 has 8 divisors (see below), whose sum is σ = 73353585600. Its totient is φ = 70294889808.

The previous prime is 71817410033. The next prime is 71817410113. The reversal of 71817410081 is 18001471817.

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 71817410081 - 2⁶ = 71817410017 is a prime.

It is a super-2 number, since 2×71817410081² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (71817410981) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3403181 + ... + 3424218.

It is an arithmetic number, because the mean of its divisors is an integer number (9169198200).

Almost surely, 2^71817410081 is an apocalyptic number.

It is an amenable number.

71817410081 is a deficient number, since it is larger than the sum of its proper divisors (1536175519).

71817410081 is a wasteful number, since it uses less digits than its factorization.

71817410081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6827623.

The product of its (nonzero) digits is 12544, while the sum is 38.

Adding to 71817410081 its reverse (18001471817), we get a palindrome (89818881898).

The spelling of 71817410081 in words is "seventy-one billion, eight hundred seventeen million, four hundred ten thousand, eighty-one".