81826830267 has 32 divisors (see below), whose sum is σ = 136481264640. Its totient is φ = 42453832320.

The previous prime is 81826830203. The next prime is 81826830347. The reversal of 81826830267 is 76203862818.

It is a happy number.

It is not a de Polignac number, because 81826830267 - 2⁶ = 81826830203 is a prime.

It is not an unprimeable number, because it can be changed into a prime (81826830367) 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 31 ways as a sum of consecutive naturals, for example, 2440167 + ... + 2473472.

It is an arithmetic number, because the mean of its divisors is an integer number (4265039520).

Almost surely, 2^81826830267 is an apocalyptic number.

81826830267 is a deficient number, since it is larger than the sum of its proper divisors (54654434373).

81826830267 is a wasteful number, since it uses less digits than its factorization.

81826830267 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4913723.

The product of its (nonzero) digits is 1548288, while the sum is 51.

The spelling of 81826830267 in words is "eighty-one billion, eight hundred twenty-six million, eight hundred thirty thousand, two hundred sixty-seven".