8081765064 has 64 divisors (see below), whose sum is σ = 23630904000. Its totient is φ = 2552135040.

The previous prime is 8081765063. The next prime is 8081765089. The reversal of 8081765064 is 4605671808.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (8081765063) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 980517 + ... + 988724.

It is an arithmetic number, because the mean of its divisors is an integer number (369232875).

Almost surely, 2^8081765064 is an apocalyptic number.

It is an amenable number.

8081765064 is an abundant number, since it is smaller than the sum of its proper divisors (15549138936).

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

8081765064 is a wasteful number, since it uses less digits than its factorization.

8081765064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1969275 (or 1969265 counting only the distinct ones).

The product of its (nonzero) digits is 322560, while the sum is 45.

The square root of 8081765064 is about 89898.6377204905. The cubic root of 8081765064 is about 2006.7906726210.

The spelling of 8081765064 in words is "eight billion, eighty-one million, seven hundred sixty-five thousand, sixty-four".