81224883042 has 16 divisors (see below), whose sum is σ = 169512799680. Its totient is φ = 25897788752.

The previous prime is 81224883037. The next prime is 81224883053. The reversal of 81224883042 is 24038842218.

It is a junction number, because it is equal to n+sod(n) for n = 81224882985 and 81224883003.

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, 294292917 + ... + 294293192.

It is an arithmetic number, because the mean of its divisors is an integer number (10594549980).

Almost surely, 2^81224883042 is an apocalyptic number.

81224883042 is an abundant number, since it is smaller than the sum of its proper divisors (88287916638).

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

81224883042 is a wasteful number, since it uses less digits than its factorization.

81224883042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 588586137.

The product of its (nonzero) digits is 196608, while the sum is 42.

The spelling of 81224883042 in words is "eighty-one billion, two hundred twenty-four million, eight hundred eighty-three thousand, forty-two".