81240494709114 has 96 divisors (see below), whose sum is σ = 202809173548800. Its totient is φ = 23293219351680.

The previous prime is 81240494709083. The next prime is 81240494709139. The reversal of 81240494709114 is 41190749404218.

81240494709114 is a `hidden beast` number, since 8 + 1 + 2 + 40 + 49 + 470 + 91 + 1 + 4 = 666.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 149505154 + ... + 150047565.

It is an arithmetic number, because the mean of its divisors is an integer number (2112595557800).

Almost surely, 2^{81240494709114} is an apocalyptic number.

81240494709114 is an abundant number, since it is smaller than the sum of its proper divisors (121568678839686).

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

81240494709114 is a wasteful number, since it uses less digits than its factorization.

81240494709114 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 299552820 (or 299552817 counting only the distinct ones).

The product of its (nonzero) digits is 2322432, while the sum is 54.

The spelling of 81240494709114 in words is "eighty-one trillion, two hundred forty billion, four hundred ninety-four million, seven hundred nine thousand, one hundred fourteen".