81362042547882 has 64 divisors (see below), whose sum is σ = 173461077504000. Its totient is φ = 25367407910208.

The previous prime is 81362042547857. The next prime is 81362042547893. The reversal of 81362042547882 is 28874524026318.

It is a happy number.

81362042547882 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 463532128 + ... + 463707620.

It is an arithmetic number, because the mean of its divisors is an integer number (2710329336000).

Almost surely, 2^{81362042547882} is an apocalyptic number.

81362042547882 is an abundant number, since it is smaller than the sum of its proper divisors (92099034956118).

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

81362042547882 is a wasteful number, since it uses less digits than its factorization.

81362042547882 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 227075.

The product of its (nonzero) digits is 41287680, while the sum is 60.

The spelling of 81362042547882 in words is "eighty-one trillion, three hundred sixty-two billion, forty-two million, five hundred forty-seven thousand, eight hundred eighty-two".