81835160027 has 4 divisors (see below), whose sum is σ = 81836447880. Its totient is φ = 81833872176.

The previous prime is 81835160021. The next prime is 81835160047. The reversal of 81835160027 is 72006153818.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 81835160027 - 2⁸ = 81835159771 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (81835160021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 543377 + ... + 677442.

It is an arithmetic number, because the mean of its divisors is an integer number (20459111970).

Almost surely, 2^81835160027 is an apocalyptic number.

81835160027 is a deficient number, since it is larger than the sum of its proper divisors (1287853).

81835160027 is a wasteful number, since it uses less digits than its factorization.

81835160027 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1287852.

The product of its (nonzero) digits is 80640, while the sum is 41.

The spelling of 81835160027 in words is "eighty-one billion, eight hundred thirty-five million, one hundred sixty thousand, twenty-seven".