82215381853 has 4 divisors (see below), whose sum is σ = 89689507488. Its totient is φ = 74741256220.

The previous prime is 82215381847. The next prime is 82215381877. The reversal of 82215381853 is 35818351228.

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 82215381853 - 2¹³ = 82215373661 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 (82215381823) 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, 3737062801 + ... + 3737062822.

It is an arithmetic number, because the mean of its divisors is an integer number (22422376872).

Almost surely, 2^82215381853 is an apocalyptic number.

It is an amenable number.

82215381853 is a deficient number, since it is larger than the sum of its proper divisors (7474125635).

82215381853 is a wasteful number, since it uses less digits than its factorization.

82215381853 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7474125634.

The product of its digits is 460800, while the sum is 46.

The spelling of 82215381853 in words is "eighty-two billion, two hundred fifteen million, three hundred eighty-one thousand, eight hundred fifty-three".