81326108301 has 8 divisors (see below), whose sum is σ = 109487576640. Its totient is φ = 53691022752.

The previous prime is 81326108287. The next prime is 81326108317. The reversal of 81326108301 is 10380162318.

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

It is not a de Polignac number, because 81326108301 - 2¹⁸ = 81325846157 is a prime.

It is a super-2 number, since 2×81326108301² (a number of 23 digits) contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (81326108341) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 131595336 + ... + 131595953.

It is an arithmetic number, because the mean of its divisors is an integer number (13685947080).

Almost surely, 2^81326108301 is an apocalyptic number.

It is an amenable number.

81326108301 is a deficient number, since it is larger than the sum of its proper divisors (28161468339).

81326108301 is a wasteful number, since it uses less digits than its factorization.

81326108301 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 263191395.

The product of its (nonzero) digits is 6912, while the sum is 33.

The spelling of 81326108301 in words is "eighty-one billion, three hundred twenty-six million, one hundred eight thousand, three hundred one".