8216871012 has 84 divisors (see below), whose sum is σ = 24639402816. Its totient is φ = 2347671600.

The previous prime is 8216870993. The next prime is 8216871023. The reversal of 8216871012 is 2101786128.

It is a tau number, because it is divible by the number of its divisors (84).

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 27 ways as a sum of consecutive naturals, for example, 180864 + ... + 221687.

It is an arithmetic number, because the mean of its divisors is an integer number (293326224).

Almost surely, 2^8216871012 is an apocalyptic number.

It is an amenable number.

8216871012 is an abundant number, since it is smaller than the sum of its proper divisors (16422531804).

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

8216871012 is a wasteful number, since it uses less digits than its factorization.

8216871012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 402580 (or 402563 counting only the distinct ones).

The product of its (nonzero) digits is 10752, while the sum is 36.

The square root of 8216871012 is about 90646.9580956802. The cubic root of 8216871012 is about 2017.9116911121.

The spelling of 8216871012 in words is "eight billion, two hundred sixteen million, eight hundred seventy-one thousand, twelve".