82108644624405 has 32 divisors (see below), whose sum is σ = 166823912889600. Its totient is φ = 37535380399296.

The previous prime is 82108644624389. The next prime is 82108644624431. The reversal of 82108644624405 is 50442644680128.

82108644624405 is a `hidden beast` number, since 8 + 2 + 1 + 0 + 8 + 6 + 4 + 4 + 624 + 4 + 0 + 5 = 666.

It is not a de Polignac number, because 82108644624405 - 2⁴ = 82108644624389 is a prime.

It is a congruent number.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 43443726370 + ... + 43443728259.

It is an arithmetic number, because the mean of its divisors is an integer number (5213247277800).

Almost surely, 2^{82108644624405} is an apocalyptic number.

It is an amenable number.

82108644624405 is an abundant number, since it is smaller than the sum of its proper divisors (84715268265195).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

82108644624405 is a wasteful number, since it uses less digits than its factorization.

82108644624405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86887454650 (or 86887454644 counting only the distinct ones).

The product of its (nonzero) digits is 11796480, while the sum is 54.

The spelling of 82108644624405 in words is "eighty-two trillion, one hundred eight billion, six hundred forty-four million, six hundred twenty-four thousand, four hundred five".