82195139853 has 10 divisors (see below), whose sum is σ = 122785332494. Its totient is φ = 54796759848.

The previous prime is 82195139821. The next prime is 82195139857. The reversal of 82195139853 is 35893159128.

It can be written as a sum of positive squares in only one way, i.e., 58970294244 + 23224845609 = 242838^2 + 152397^2 .

It is not a de Polignac number, because 82195139853 - 2⁵ = 82195139821 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 82195139853.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82195139857) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 507377326 + ... + 507377487.

Almost surely, 2^82195139853 is an apocalyptic number.

It is an amenable number.

82195139853 is a deficient number, since it is larger than the sum of its proper divisors (40590192641).

82195139853 is a wasteful number, since it uses less digits than its factorization.

82195139853 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1014754825 (or 1014754816 counting only the distinct ones).

The product of its digits is 2332800, while the sum is 54.

The spelling of 82195139853 in words is "eighty-two billion, one hundred ninety-five million, one hundred thirty-nine thousand, eight hundred fifty-three".