81132095 has 8 divisors (see below), whose sum is σ = 106209360. Its totient is φ = 59005120.

The previous prime is 81132091. The next prime is 81132113. The reversal of 81132095 is 59023118.

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

It is not a de Polignac number, because 81132095 - 2² = 81132091 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (81132091) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 737510 + ... + 737619.

It is an arithmetic number, because the mean of its divisors is an integer number (13276170).

Almost surely, 2^81132095 is an apocalyptic number.

81132095 is a deficient number, since it is larger than the sum of its proper divisors (25077265).

81132095 is a wasteful number, since it uses less digits than its factorization.

81132095 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1475145.

The product of its (nonzero) digits is 2160, while the sum is 29.

The square root of 81132095 is about 9007.3356215920. The cubic root of 81132095 is about 432.9099457677.

The spelling of 81132095 in words is "eighty-one million, one hundred thirty-two thousand, ninety-five".