82438868216 has 32 divisors (see below), whose sum is σ = 157314016080. Its totient is φ = 40490246400.

The previous prime is 82438868209. The next prime is 82438868221. The reversal of 82438868216 is 61286883428.

It is a happy number.

It is a Smith number, since the sum of its digits (56) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 260375 + ... + 482361.

Almost surely, 2^82438868216 is an apocalyptic number.

It is an amenable number.

82438868216 is a deficient number, since it is larger than the sum of its proper divisors (74875147864).

82438868216 is a wasteful number, since it uses less digits than its factorization.

82438868216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 222815 (or 222811 counting only the distinct ones).

The product of its digits is 7077888, while the sum is 56.

The spelling of 82438868216 in words is "eighty-two billion, four hundred thirty-eight million, eight hundred sixty-eight thousand, two hundred sixteen".