81079822330 has 64 divisors (see below), whose sum is σ = 166087272960. Its totient is φ = 28250947584.

The previous prime is 81079822319. The next prime is 81079822331. The reversal of 81079822330 is 3322897018.

It is not an unprimeable number, because it can be changed into a prime (81079822331) by changing a digit.

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 in 31 ways as a sum of consecutive naturals, for example, 570927 + ... + 698653.

It is an arithmetic number, because the mean of its divisors is an integer number (2595113640).

Almost surely, 2^81079822330 is an apocalyptic number.

81079822330 is an abundant number, since it is smaller than the sum of its proper divisors (85007450630).

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

81079822330 is a wasteful number, since it uses less digits than its factorization.

81079822330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 128023.

The product of its (nonzero) digits is 145152, while the sum is 43.

The spelling of 81079822330 in words is "eighty-one billion, seventy-nine million, eight hundred twenty-two thousand, three hundred thirty".