81122107296 has 48 divisors (see below), whose sum is σ = 213089111424. Its totient is φ = 27022470144.

The previous prime is 81122107279. The next prime is 81122107309. The reversal of 81122107296 is 69270122118.

It is a tau number, because it is divible by the number of its divisors (48).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 141385 + ... + 426888.

It is an arithmetic number, because the mean of its divisors is an integer number (4439356488).

Almost surely, 2^81122107296 is an apocalyptic number.

It is an amenable number.

81122107296 is an abundant number, since it is smaller than the sum of its proper divisors (131967004128).

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

81122107296 is a wasteful number, since it uses less digits than its factorization.

81122107296 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 569773 (or 569765 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 39.

The spelling of 81122107296 in words is "eighty-one billion, one hundred twenty-two million, one hundred seven thousand, two hundred ninety-six".