81095424773 has 16 divisors (see below), whose sum is σ = 92009176512. Its totient is φ = 70828128000.

The previous prime is 81095424757. The next prime is 81095424797. The reversal of 81095424773 is 37742459018.

It is a cyclic number.

It is not a de Polignac number, because 81095424773 - 2⁴ = 81095424757 is a prime.

It is a super-3 number, since 3×81095424773³ (a number of 34 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (81095421773) 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 15 ways as a sum of consecutive naturals, for example, 1376468 + ... + 1434173.

It is an arithmetic number, because the mean of its divisors is an integer number (5750573532).

Almost surely, 2^81095424773 is an apocalyptic number.

It is an amenable number.

81095424773 is a deficient number, since it is larger than the sum of its proper divisors (10913751739).

81095424773 is a wasteful number, since it uses less digits than its factorization.

81095424773 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2810756.

The product of its (nonzero) digits is 1693440, while the sum is 50.

The spelling of 81095424773 in words is "eighty-one billion, ninety-five million, four hundred twenty-four thousand, seven hundred seventy-three".