82818119124021 has 4 divisors (see below), whose sum is σ = 110424158832032. Its totient is φ = 55212079416012.

The previous prime is 82818119124001. The next prime is 82818119124043. The reversal of 82818119124021 is 12042191181828.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 82818119124021 - 2¹¹ = 82818119121973 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 (82818119124001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13803019854001 + ... + 13803019854006.

It is an arithmetic number, because the mean of its divisors is an integer number (27606039708008).

Almost surely, 2^{82818119124021} is an apocalyptic number.

It is an amenable number.

82818119124021 is a deficient number, since it is larger than the sum of its proper divisors (27606039708011).

82818119124021 is a wasteful number, since it uses less digits than its factorization.

82818119124021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27606039708010.

The product of its (nonzero) digits is 147456, while the sum is 48.

The spelling of 82818119124021 in words is "eighty-two trillion, eight hundred eighteen billion, one hundred nineteen million, one hundred twenty-four thousand, twenty-one".