81482563943040 has 256 divisors, whose sum is σ = 287264156699520. Its totient is φ = 19515158544384.

The previous prime is 81482563942939. The next prime is 81482563943071. The reversal of 81482563943040 is 4034936528418.

81482563943040 is digitally balanced in base 3 and base 5, because in such bases 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, 43191694 + ... + 45038733.

Almost surely, 2^{81482563943040} is an apocalyptic number.

81482563943040 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

81482563943040 is an abundant number, since it is smaller than the sum of its proper divisors (205781592756480).

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

81482563943040 is a wasteful number, since it uses less digits than its factorization.

81482563943040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88230499 (or 88230487 counting only the distinct ones).

The product of its (nonzero) digits is 19906560, while the sum is 57.

The spelling of 81482563943040 in words is "eighty-one trillion, four hundred eighty-two billion, five hundred sixty-three million, nine hundred forty-three thousand, forty".