8157122600 has 96 divisors (see below), whose sum is σ = 21129897600. Its totient is φ = 2903078400.

The previous prime is 8157122599. The next prime is 8157122609. The reversal of 8157122600 is 62217518.

It is a super-2 number, since 2×8157122600² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (8157122609) 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, 63956 + ... + 142844.

It is an arithmetic number, because the mean of its divisors is an integer number (220103100).

Almost surely, 2^8157122600 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 8157122600, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10564948800).

8157122600 is an abundant number, since it is smaller than the sum of its proper divisors (12972775000).

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

8157122600 is a wasteful number, since it uses less digits than its factorization.

8157122600 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78963 (or 78954 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 32.

The square root of 8157122600 is about 90316.7902441180. The cubic root of 8157122600 is about 2013.0087527229.

The spelling of 8157122600 in words is "eight billion, one hundred fifty-seven million, one hundred twenty-two thousand, six hundred".