81208096422 has 32 divisors (see below), whose sum is σ = 170984805120. Its totient is φ = 25641603360.

The previous prime is 81208096379. The next prime is 81208096471. The reversal of 81208096422 is 22469080218.

It is a congruent 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, 1037368 + ... + 1112900.

It is an arithmetic number, because the mean of its divisors is an integer number (5343275160).

Almost surely, 2^81208096422 is an apocalyptic number.

81208096422 is an abundant number, since it is smaller than the sum of its proper divisors (89776708698).

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

81208096422 is a wasteful number, since it uses less digits than its factorization.

81208096422 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84988.

The product of its (nonzero) digits is 110592, while the sum is 42.

The spelling of 81208096422 in words is "eighty-one billion, two hundred eight million, ninety-six thousand, four hundred twenty-two".