81127095 has 48 divisors (see below), whose sum is σ = 157593600. Its totient is φ = 35466816.

The previous prime is 81127091. The next prime is 81127099. The reversal of 81127095 is 59072118.

It is an interprime number because it is at equal distance from previous prime (81127091) and next prime (81127099).

It is not a de Polignac number, because 81127095 - 2² = 81127091 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (81127091) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 14506 + ... + 19304.

It is an arithmetic number, because the mean of its divisors is an integer number (3283200).

Almost surely, 2^81127095 is an apocalyptic number.

81127095 is a deficient number, since it is larger than the sum of its proper divisors (76466505).

81127095 is a wasteful number, since it uses less digits than its factorization.

81127095 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4844 (or 4837 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 33.

The square root of 81127095 is about 9007.0580657615. The cubic root of 81127095 is about 432.9010524759.

The spelling of 81127095 in words is "eighty-one million, one hundred twenty-seven thousand, ninety-five".