8136261264 has 20 divisors (see below), whose sum is σ = 21018675056. Its totient is φ = 2712087072.

The previous prime is 8136261241. The next prime is 8136261269. The reversal of 8136261264 is 4621626318.

It is a nude number because it is divisible by every one of its digits.

It is not an unprimeable number, because it can be changed into a prime (8136261269) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 84752674 + ... + 84752769.

Almost surely, 2^8136261264 is an apocalyptic number.

It is an amenable number.

8136261264 is an abundant number, since it is smaller than the sum of its proper divisors (12882413792).

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

8136261264 is a wasteful number, since it uses less digits than its factorization.

8136261264 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 169505454 (or 169505448 counting only the distinct ones).

The product of its digits is 82944, while the sum is 39.

The square root of 8136261264 is about 90201.2265105082. The cubic root of 8136261264 is about 2011.2912393286.

The spelling of 8136261264 in words is "eight billion, one hundred thirty-six million, two hundred sixty-one thousand, two hundred sixty-four".