81134715 has 8 divisors (see below), whose sum is σ = 129815568. Its totient is φ = 43271840.

The previous prime is 81134707. The next prime is 81134723. The reversal of 81134715 is 51743118.

It is an interprime number because it is at equal distance from previous prime (81134707) and next prime (81134723).

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

It is not a de Polignac number, because 81134715 - 2³ = 81134707 is a prime.

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, 2704476 + ... + 2704505.

It is an arithmetic number, because the mean of its divisors is an integer number (16226946).

Almost surely, 2^81134715 is an apocalyptic number.

81134715 is a deficient number, since it is larger than the sum of its proper divisors (48680853).

81134715 is a wasteful number, since it uses less digits than its factorization.

81134715 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5408989.

The product of its digits is 3360, while the sum is 30.

The square root of 81134715 is about 9007.4810574322. The cubic root of 81134715 is about 432.9146057068.

The spelling of 81134715 in words is "eighty-one million, one hundred thirty-four thousand, seven hundred fifteen".