81156096296 has 32 divisors (see below), whose sum is σ = 170487629280. Its totient is φ = 35892129600.

The previous prime is 81156096271. The next prime is 81156096299. The reversal of 81156096296 is 69269065118.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (81156096299) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12459290 + ... + 12465801.

It is an arithmetic number, because the mean of its divisors is an integer number (5327738415).

Almost surely, 2^81156096296 is an apocalyptic number.

It is an amenable number.

81156096296 is an abundant number, since it is smaller than the sum of its proper divisors (89331532984).

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

81156096296 is a wasteful number, since it uses less digits than its factorization.

81156096296 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24925145 (or 24925141 counting only the distinct ones).

The product of its (nonzero) digits is 1399680, while the sum is 53.

The spelling of 81156096296 in words is "eighty-one billion, one hundred fifty-six million, ninety-six thousand, two hundred ninety-six".