82000021554216 has 48 divisors (see below), whose sum is σ = 222132493496160. Its totient is φ = 27327297221280.

The previous prime is 82000021554131. The next prime is 82000021554293. The reversal of 82000021554216 is 61245512000028.

82000021554216 is a `hidden beast` number, since 8 + 200 + 0 + 0 + 21 + 5 + 5 + 421 + 6 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 125574100 + ... + 126225411.

It is an arithmetic number, because the mean of its divisors is an integer number (4627760281170).

Almost surely, 2^{82000021554216} is an apocalyptic number.

It is an amenable number.

82000021554216 is an abundant number, since it is smaller than the sum of its proper divisors (140132471941944).

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

82000021554216 is a wasteful number, since it uses less digits than its factorization.

82000021554216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 251804046 (or 251804039 counting only the distinct ones).

The product of its (nonzero) digits is 38400, while the sum is 36.

The spelling of 82000021554216 in words is "eighty-two trillion, twenty-one million, five hundred fifty-four thousand, two hundred sixteen".