81741611 has 8 divisors (see below), whose sum is σ = 93863424. Its totient is φ = 69730920.

The previous prime is 81741599. The next prime is 81741613. The reversal of 81741611 is 11614718.

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

It is not a de Polignac number, because 81741611 - 2¹⁰ = 81740587 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (81741613) 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, 26195 + ... + 29148.

It is an arithmetic number, because the mean of its divisors is an integer number (11732928).

Almost surely, 2^81741611 is an apocalyptic number.

81741611 is a deficient number, since it is larger than the sum of its proper divisors (12121813).

81741611 is a wasteful number, since it uses less digits than its factorization.

81741611 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55561.

The product of its digits is 1344, while the sum is 29.

The square root of 81741611 is about 9041.1067353505. The cubic root of 81741611 is about 433.9913406924.

The spelling of 81741611 in words is "eighty-one million, seven hundred forty-one thousand, six hundred eleven".