8461158912 has 140 divisors (see below), whose sum is σ = 25348211130. Its totient is φ = 2820261888.

The previous prime is 8461158887. The next prime is 8461158917. The reversal of 8461158912 is 2198511648.

It is a happy number.

8461158912 is a `hidden beast` number, since 8 + 4 + 61 + 1 + 589 + 1 + 2 = 666.

It can be written as a sum of positive squares in only one way, i.e., 4958413056 + 3502745856 = 70416^2 + 59184^2 .

It is not an unprimeable number, because it can be changed into a prime (8461158917) by changing a digit.

It is a polite number, since it can be written in 13 ways as a sum of consecutive naturals, for example, 361914 + ... + 384582.

Almost surely, 2^8461158912 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 8461158912, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12674105565).

8461158912 is an abundant number, since it is smaller than the sum of its proper divisors (16887052218).

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

8461158912 is an frugal number, since it uses more digits than its factorization.

8461158912 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22705 (or 22674 counting only the distinct ones).

The product of its digits is 138240, while the sum is 45.

The square root of 8461158912 is about 91984.5580083962. The cubic root of 8461158912 is about 2037.7142564756.

The spelling of 8461158912 in words is "eight billion, four hundred sixty-one million, one hundred fifty-eight thousand, nine hundred twelve".