81100023041 has 8 divisors (see below), whose sum is σ = 81252240000. Its totient is φ = 80947863360.

The previous prime is 81100023031. The next prime is 81100023061. The reversal of 81100023041 is 14032000118.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-81100023041 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (81100023001) 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, 3702281 + ... + 3724121.

It is an arithmetic number, because the mean of its divisors is an integer number (10156530000).

Almost surely, 2^81100023041 is an apocalyptic number.

It is an amenable number.

81100023041 is a deficient number, since it is larger than the sum of its proper divisors (152216959).

81100023041 is a wasteful number, since it uses less digits than its factorization.

81100023041 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28639.

The product of its (nonzero) digits is 192, while the sum is 20.

Adding to 81100023041 its reverse (14032000118), we get a palindrome (95132023159).

The spelling of 81100023041 in words is "eighty-one billion, one hundred million, twenty-three thousand, forty-one".