81326095 has 8 divisors (see below), whose sum is σ = 97686864. Its totient is φ = 64997184.

The previous prime is 81326059. The next prime is 81326107. The reversal of 81326095 is 59062318.

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

It is a cyclic number.

It is not a de Polignac number, because 81326095 - 2⁷ = 81325967 is a prime.

It is a super-2 number, since 2×81326095² = 13227867455898050, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 81326095.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1929 + ... + 12898.

It is an arithmetic number, because the mean of its divisors is an integer number (12210858).

Almost surely, 2^81326095 is an apocalyptic number.

81326095 is a deficient number, since it is larger than the sum of its proper divisors (16360769).

81326095 is a wasteful number, since it uses less digits than its factorization.

81326095 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15929.

The product of its (nonzero) digits is 12960, while the sum is 34.

The square root of 81326095 is about 9018.0981919693. The cubic root of 81326095 is about 433.2547237419.

The spelling of 81326095 in words is "eighty-one million, three hundred twenty-six thousand, ninety-five".