8158611240 has 192 divisors, whose sum is σ = 28917907200. Its totient is φ = 1982762496.

The previous prime is 8158611203. The next prime is 8158611247. The reversal of 8158611240 is 421168518.

8158611240 is a `hidden beast` number, since 8 + 15 + 8 + 611 + 24 + 0 = 666.

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

It is a junction number, because it is equal to n+sod(n) for n = 8158611195 and 8158611204.

It is not an unprimeable number, because it can be changed into a prime (8158611247) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 358687 + ... + 380753.

It is an arithmetic number, because the mean of its divisors is an integer number (150614100).

Almost surely, 2^8158611240 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 8158611240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14458953600).

8158611240 is an abundant number, since it is smaller than the sum of its proper divisors (20759295960).

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

8158611240 is a wasteful number, since it uses less digits than its factorization.

8158611240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22176 (or 22169 counting only the distinct ones).

The product of its (nonzero) digits is 15360, while the sum is 36.

The square root of 8158611240 is about 90325.0310821978. The cubic root of 8158611240 is about 2013.1312004382.

Adding to 8158611240 its reverse (421168518), we get a palindrome (8579779758).

The spelling of 8158611240 in words is "eight billion, one hundred fifty-eight million, six hundred eleven thousand, two hundred forty".