82317358621 has 4 divisors (see below), whose sum is σ = 86649851200. Its totient is φ = 77984866044.

The previous prime is 82317358619. The next prime is 82317358637. The reversal of 82317358621 is 12685371328.

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 82317358621 - 2¹ = 82317358619 is a prime.

It is a super-2 number, since 2×82317358621² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82317358421) 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, 2166246261 + ... + 2166246298.

It is an arithmetic number, because the mean of its divisors is an integer number (21662462800).

Almost surely, 2^82317358621 is an apocalyptic number.

It is an amenable number.

82317358621 is a deficient number, since it is larger than the sum of its proper divisors (4332492579).

82317358621 is a wasteful number, since it uses less digits than its factorization.

82317358621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4332492578.

The product of its digits is 483840, while the sum is 46.

The spelling of 82317358621 in words is "eighty-two billion, three hundred seventeen million, three hundred fifty-eight thousand, six hundred twenty-one".