82181188911 has 8 divisors (see below), whose sum is σ = 116020502064. Its totient is φ = 51564667520.

The previous prime is 82181188823. The next prime is 82181188919. The reversal of 82181188911 is 11988118128.

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 82181188911 - 2¹⁵ = 82181156143 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82181188919) 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, 805697880 + ... + 805697981.

It is an arithmetic number, because the mean of its divisors is an integer number (14502562758).

Almost surely, 2^82181188911 is an apocalyptic number.

82181188911 is a deficient number, since it is larger than the sum of its proper divisors (33839313153).

82181188911 is a wasteful number, since it uses less digits than its factorization.

82181188911 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1611395881.

The product of its digits is 73728, while the sum is 48.

The spelling of 82181188911 in words is "eighty-two billion, one hundred eighty-one million, one hundred eighty-eight thousand, nine hundred eleven".