8157208860 has 72 divisors (see below), whose sum is σ = 24794196336. Its totient is φ = 2170801920.

The previous prime is 8157208849. The next prime is 8157208861. The reversal of 8157208860 is 688027518.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8157208861) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 42232 + ... + 134528.

It is an arithmetic number, because the mean of its divisors is an integer number (344363838).

Almost surely, 2^8157208860 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 8157208860, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12397098168).

8157208860 is an abundant number, since it is smaller than the sum of its proper divisors (16636987476).

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

8157208860 is a wasteful number, since it uses less digits than its factorization.

8157208860 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 92803 (or 92798 counting only the distinct ones).

The product of its (nonzero) digits is 215040, while the sum is 45.

The square root of 8157208860 is about 90317.2677841840. The cubic root of 8157208860 is about 2013.0158484245.

The spelling of 8157208860 in words is "eight billion, one hundred fifty-seven million, two hundred eight thousand, eight hundred sixty".