81495150658834 has 8 divisors (see below), whose sum is σ = 133355701078128. Its totient is φ = 37043250299460.

The previous prime is 81495150658783. The next prime is 81495150658843. The reversal of 81495150658834 is 43885605159418.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 81495150658834.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1852162514952 + ... + 1852162514995.

It is an arithmetic number, because the mean of its divisors is an integer number (16669462634766).

Almost surely, 2^{81495150658834} is an apocalyptic number.

81495150658834 is a deficient number, since it is larger than the sum of its proper divisors (51860550419294).

81495150658834 is a wasteful number, since it uses less digits than its factorization.

81495150658834 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3704325029960.

The product of its (nonzero) digits is 165888000, while the sum is 67.

The spelling of 81495150658834 in words is "eighty-one trillion, four hundred ninety-five billion, one hundred fifty million, six hundred fifty-eight thousand, eight hundred thirty-four".