8116730640 has 120 divisors (see below), whose sum is σ = 27923634648. Its totient is φ = 2111662080.

The previous prime is 8116730617. The next prime is 8116730689. The reversal of 8116730640 is 460376118.

8116730640 is a `hidden beast` number, since 8 + 1 + 1 + 6 + 7 + 3 + 0 + 640 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 288728064 + 7828002576 = 16992^2 + 88476^2 .

It is a tau number, because it is divible by the number of its divisors (120).

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 = 8116730595 and 8116730604.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 107959 + ... + 166998.

Almost surely, 2^8116730640 is an apocalyptic number.

8116730640 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

8116730640 is an abundant number, since it is smaller than the sum of its proper divisors (19806904008).

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

8116730640 is a wasteful number, since it uses less digits than its factorization.

8116730640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 275017 (or 275008 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 36.

The square root of 8116730640 is about 90092.9000532228. The cubic root of 8116730640 is about 2009.6806205253.

The spelling of 8116730640 in words is "eight billion, one hundred sixteen million, seven hundred thirty thousand, six hundred forty".