8071940664 has 24 divisors (see below), whose sum is σ = 21861506160. Its totient is φ = 2690646864.

The previous prime is 8071940633. The next prime is 8071940671. The reversal of 8071940664 is 4660491708.

It is a tau number, because it is divible by the number of its divisors (24).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 56055072 + ... + 56055215.

It is an arithmetic number, because the mean of its divisors is an integer number (910896090).

Almost surely, 2^8071940664 is an apocalyptic number.

It is an amenable number.

8071940664 is an abundant number, since it is smaller than the sum of its proper divisors (13789565496).

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

8071940664 is a wasteful number, since it uses less digits than its factorization.

8071940664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 112110299 (or 112110292 counting only the distinct ones).

The product of its (nonzero) digits is 290304, while the sum is 45.

The square root of 8071940664 is about 89843.9795645763. The cubic root of 8071940664 is about 2005.9771742321.

The spelling of 8071940664 in words is "eight billion, seventy-one million, nine hundred forty thousand, six hundred sixty-four".