81150281112 has 32 divisors (see below), whose sum is σ = 202882823280. Its totient is φ = 27049144320.

The previous prime is 81150281111. The next prime is 81150281119. The reversal of 81150281112 is 21118205118.

It is a self number, because there is not a number n which added to its sum of digits gives 81150281112.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (81150281111) 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, 1104928 + ... + 1176080.

Almost surely, 2^81150281112 is an apocalyptic number.

It is an amenable number.

81150281112 is an abundant number, since it is smaller than the sum of its proper divisors (121732542168).

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

81150281112 is a wasteful number, since it uses less digits than its factorization.

81150281112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 118683 (or 118679 counting only the distinct ones).

The product of its (nonzero) digits is 1280, while the sum is 30.

The spelling of 81150281112 in words is "eighty-one billion, one hundred fifty million, two hundred eighty-one thousand, one hundred twelve".