8202158172 has 120 divisors (see below), whose sum is σ = 23168065536. Its totient is φ = 2515370112.

The previous prime is 8202158161. The next prime is 8202158177. The reversal of 8202158172 is 2718512028.

8202158172 is a `hidden beast` number, since 8 + 2 + 0 + 2 + 1 + 581 + 72 = 666.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8202158177) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 1332133 + ... + 1338275.

Almost surely, 2^8202158172 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 8202158172, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11584032768).

8202158172 is an abundant number, since it is smaller than the sum of its proper divisors (14965907364).

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

8202158172 is a wasteful number, since it uses less digits than its factorization.

8202158172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6489 (or 6478 counting only the distinct ones).

The product of its (nonzero) digits is 17920, while the sum is 36.

The square root of 8202158172 is about 90565.7671087702. The cubic root of 8202158172 is about 2016.7065709959.

The spelling of 8202158172 in words is "eight billion, two hundred two million, one hundred fifty-eight thousand, one hundred seventy-two".