82123261093 has 4 divisors (see below), whose sum is σ = 82125014368. Its totient is φ = 82121507820.

The previous prime is 82123261049. The next prime is 82123261097. The reversal of 82123261093 is 39016232128.

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 a cyclic number.

It is not a de Polignac number, because 82123261093 - 2²¹ = 82121163941 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 (82123261097) 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, 804393 + ... + 900718.

It is an arithmetic number, because the mean of its divisors is an integer number (20531253592).

Almost surely, 2^82123261093 is an apocalyptic number.

It is an amenable number.

82123261093 is a deficient number, since it is larger than the sum of its proper divisors (1753275).

82123261093 is a wasteful number, since it uses less digits than its factorization.

82123261093 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1753274.

The product of its (nonzero) digits is 31104, while the sum is 37.

The spelling of 82123261093 in words is "eighty-two billion, one hundred twenty-three million, two hundred sixty-one thousand, ninety-three".