81126914 has 16 divisors (see below), whose sum is σ = 133341120. Its totient is φ = 36712560.

The previous prime is 81126901. The next prime is 81126919. The reversal of 81126914 is 41962118.

It is not an unprimeable number, because it can be changed into a prime (81126919) 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, 3014 + ... + 13089.

It is an arithmetic number, because the mean of its divisors is an integer number (8333820).

Almost surely, 2^81126914 is an apocalyptic number.

81126914 is a deficient number, since it is larger than the sum of its proper divisors (52214206).

81126914 is a wasteful number, since it uses less digits than its factorization.

81126914 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16345.

The product of its digits is 3456, while the sum is 32.

The square root of 81126914 is about 9007.0480180801. The cubic root of 81126914 is about 432.9007305319.

The spelling of 81126914 in words is "eighty-one million, one hundred twenty-six thousand, nine hundred fourteen".