8711718640 has 40 divisors (see below), whose sum is σ = 20455306848. Its totient is φ = 3450182400.

The previous prime is 8711718637. The next prime is 8711718649. The reversal of 8711718640 is 468171178.

It is a tau number, because it is divible by the number of its divisors (40).

It is a Smith number, since the sum of its digits (43) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8711718649) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 531012 + ... + 547171.

Almost surely, 2^8711718640 is an apocalyptic number.

8711718640 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

8711718640 is an abundant number, since it is smaller than the sum of its proper divisors (11743588208).

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

8711718640 is a wasteful number, since it uses less digits than its factorization.

8711718640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1078297 (or 1078291 counting only the distinct ones).

The product of its (nonzero) digits is 75264, while the sum is 43.

The square root of 8711718640 is about 93336.5878956372. The cubic root of 8711718640 is about 2057.6331442534.

The spelling of 8711718640 in words is "eight billion, seven hundred eleven million, seven hundred eighteen thousand, six hundred forty".