82392354021 has 4 divisors (see below), whose sum is σ = 109856472032. Its totient is φ = 54928236012.

The previous prime is 82392354007. The next prime is 82392354029. The reversal of 82392354021 is 12045329328.

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 82392354021 - 2¹⁸ = 82392091877 is a prime.

It is a super-2 number, since 2×82392354021² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82392354029) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13732059001 + ... + 13732059006.

It is an arithmetic number, because the mean of its divisors is an integer number (27464118008).

Almost surely, 2^82392354021 is an apocalyptic number.

It is an amenable number.

82392354021 is a deficient number, since it is larger than the sum of its proper divisors (27464118011).

82392354021 is a wasteful number, since it uses less digits than its factorization.

82392354021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27464118010.

The product of its (nonzero) digits is 103680, while the sum is 39.

The spelling of 82392354021 in words is "eighty-two billion, three hundred ninety-two million, three hundred fifty-four thousand, twenty-one".