81422227308 has 24 divisors (see below), whose sum is σ = 192820798912. Its totient is φ = 26735656464.

The previous prime is 81422227307. The next prime is 81422227351. The reversal of 81422227308 is 80372222418.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (81422227307) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 50634910 + ... + 50636517.

Almost surely, 2^81422227308 is an apocalyptic number.

It is an amenable number.

81422227308 is an abundant number, since it is smaller than the sum of its proper divisors (111398571604).

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

81422227308 is a wasteful number, since it uses less digits than its factorization.

81422227308 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101271501 (or 101271499 counting only the distinct ones).

The product of its (nonzero) digits is 86016, while the sum is 39.

The spelling of 81422227308 in words is "eighty-one billion, four hundred twenty-two million, two hundred twenty-seven thousand, three hundred eight".