82169557503606 has 80 divisors (see below), whose sum is σ = 187601194885104. Its totient is φ = 26872125299136.

The previous prime is 82169557503587. The next prime is 82169557503619. The reversal of 82169557503606 is 60630575596128.

It is a happy number.

82169557503606 is a `hidden beast` number, since 8 + 2 + 1 + 69 + 5 + 5 + 7 + 503 + 60 + 6 = 666.

It is a super-3 number, since 3×82169557503606³ (a number of 43 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 271741756 + ... + 272043968.

Almost surely, 2^{82169557503606} is an apocalyptic number.

82169557503606 is an abundant number, since it is smaller than the sum of its proper divisors (105431637381498).

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

82169557503606 is a wasteful number, since it uses less digits than its factorization.

82169557503606 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 333947 (or 333938 counting only the distinct ones).

The product of its (nonzero) digits is 81648000, while the sum is 63.

The spelling of 82169557503606 in words is "eighty-two trillion, one hundred sixty-nine billion, five hundred fifty-seven million, five hundred three thousand, six hundred six".