81495127112 has 32 divisors (see below), whose sum is σ = 174982440000. Its totient is φ = 34856478144.

The previous prime is 81495127069. The next prime is 81495127121. The reversal of 81495127112 is 21172159418.

It is a self number, because there is not a number n which added to its sum of digits gives 81495127112.

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, 1430243 + ... + 1486130.

It is an arithmetic number, because the mean of its divisors is an integer number (5468201250).

Almost surely, 2^81495127112 is an apocalyptic number.

It is an amenable number.

81495127112 is an abundant number, since it is smaller than the sum of its proper divisors (93487312888).

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

81495127112 is a wasteful number, since it uses less digits than its factorization.

81495127112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2916885 (or 2916881 counting only the distinct ones).

The product of its digits is 40320, while the sum is 41.

The spelling of 81495127112 in words is "eighty-one billion, four hundred ninety-five million, one hundred twenty-seven thousand, one hundred twelve".