81824611511 has 8 divisors (see below), whose sum is σ = 82103078400. Its totient is φ = 81546541560.

The previous prime is 81824611501. The next prime is 81824611513. The reversal of 81824611511 is 11511642818.

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

It is a cyclic number.

It is not a de Polignac number, because 81824611511 - 2⁶ = 81824611447 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (81824611513) 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, 316700 + ... + 513758.

It is an arithmetic number, because the mean of its divisors is an integer number (10262884800).

Almost surely, 2^81824611511 is an apocalyptic number.

81824611511 is a deficient number, since it is larger than the sum of its proper divisors (278466889).

81824611511 is a wasteful number, since it uses less digits than its factorization.

81824611511 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 198469.

The product of its digits is 15360, while the sum is 38.

The spelling of 81824611511 in words is "eighty-one billion, eight hundred twenty-four million, six hundred eleven thousand, five hundred eleven".