81496115 has 8 divisors (see below), whose sum is σ = 97844208. Its totient is φ = 65164320.

The previous prime is 81496109. The next prime is 81496141. The reversal of 81496115 is 51169418.

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

It is not a de Polignac number, because 81496115 - 2¹⁰ = 81495091 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15404 + ... + 20006.

It is an arithmetic number, because the mean of its divisors is an integer number (12230526).

Almost surely, 2^81496115 is an apocalyptic number.

81496115 is a deficient number, since it is larger than the sum of its proper divisors (16348093).

81496115 is a wasteful number, since it uses less digits than its factorization.

81496115 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8149.

The product of its digits is 8640, while the sum is 35.

The square root of 81496115 is about 9027.5198698203. The cubic root of 81496115 is about 433.5564337699.

The spelling of 81496115 in words is "eighty-one million, four hundred ninety-six thousand, one hundred fifteen".