71067222672 has 80 divisors (see below), whose sum is σ = 186412092672. Its totient is φ = 23325287040.

The previous prime is 71067222661. The next prime is 71067222691. The reversal of 71067222672 is 27622276017.

It is a happy number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 11867263 + ... + 11873249.

Almost surely, 2^71067222672 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 71067222672, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (93206046336).

71067222672 is an abundant number, since it is smaller than the sum of its proper divisors (115344870000).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

71067222672 is a wasteful number, since it uses less digits than its factorization.

71067222672 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9756 (or 9750 counting only the distinct ones).

The product of its (nonzero) digits is 197568, while the sum is 42.

Adding to 71067222672 its reverse (27622276017), we get a palindrome (98689498689).

The spelling of 71067222672 in words is "seventy-one billion, sixty-seven million, two hundred twenty-two thousand, six hundred seventy-two".