81116026 has 8 divisors (see below), whose sum is σ = 125599104. Its totient is φ = 39249660.

The previous prime is 81115967. The next prime is 81116041. The reversal of 81116026 is 62061118.

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

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 654100 + ... + 654223.

It is an arithmetic number, because the mean of its divisors is an integer number (15699888).

Almost surely, 2^81116026 is an apocalyptic number.

81116026 is a deficient number, since it is larger than the sum of its proper divisors (44483078).

81116026 is a wasteful number, since it uses less digits than its factorization.

81116026 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1308356.

The product of its (nonzero) digits is 576, while the sum is 25.

The square root of 81116026 is about 9006.4435822360. The cubic root of 81116026 is about 432.8813632065.

The spelling of 81116026 in words is "eighty-one million, one hundred sixteen thousand, twenty-six".