82051217538 has 32 divisors (see below), whose sum is σ = 170568248256. Its totient is φ = 26290582848.

The previous prime is 82051217503. The next prime is 82051217557. The reversal of 82051217538 is 83571215028.

It is a self number, because there is not a number n which added to its sum of digits gives 82051217538.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2208081 + ... + 2244932.

It is an arithmetic number, because the mean of its divisors is an integer number (5330257758).

Almost surely, 2^82051217538 is an apocalyptic number.

82051217538 is an abundant number, since it is smaller than the sum of its proper divisors (88517030718).

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

82051217538 is a wasteful number, since it uses less digits than its factorization.

82051217538 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4453138.

The product of its (nonzero) digits is 134400, while the sum is 42.

The spelling of 82051217538 in words is "eighty-two billion, fifty-one million, two hundred seventeen thousand, five hundred thirty-eight".