81468105 has 32 divisors (see below), whose sum is σ = 141955200. Its totient is φ = 39739392.

The previous prime is 81468103. The next prime is 81468109. The reversal of 81468105 is 50186418.

It is not a de Polignac number, because 81468105 - 2¹ = 81468103 is a prime.

It is not an unprimeable number, because it can be changed into a prime (81468103) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3337 + ... + 13193.

It is an arithmetic number, because the mean of its divisors is an integer number (4436100).

Almost surely, 2^81468105 is an apocalyptic number.

It is an amenable number.

81468105 is a deficient number, since it is larger than the sum of its proper divisors (60487095).

81468105 is a wasteful number, since it uses less digits than its factorization.

81468105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9913.

The product of its (nonzero) digits is 7680, while the sum is 33.

The square root of 81468105 is about 9025.9683691003. The cubic root of 81468105 is about 433.5067573436.

The spelling of 81468105 in words is "eighty-one million, four hundred sixty-eight thousand, one hundred five".