71662271222 has 4 divisors (see below), whose sum is σ = 107493406836. Its totient is φ = 35831135610.

The previous prime is 71662271207. The next prime is 71662271231. The reversal of 71662271222 is 22217226617.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a super-2 number, since 2×71662271222² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 17915567804 + ... + 17915567807.

It is an arithmetic number, because the mean of its divisors is an integer number (26873351709).

Almost surely, 2^71662271222 is an apocalyptic number.

71662271222 is a deficient number, since it is larger than the sum of its proper divisors (35831135614).

71662271222 is a wasteful number, since it uses less digits than its factorization.

71662271222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35831135613.

The product of its digits is 56448, while the sum is 38.

Adding to 71662271222 its reverse (22217226617), we get a palindrome (93879497839).

The spelling of 71662271222 in words is "seventy-one billion, six hundred sixty-two million, two hundred seventy-one thousand, two hundred twenty-two".