6816501880 has 16 divisors (see below), whose sum is σ = 15337129320. Its totient is φ = 2726600736.

The previous prime is 6816501877. The next prime is 6816501889. The reversal of 6816501880 is 881056186.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6816501889) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 85206234 + ... + 85206313.

Almost surely, 2^6816501880 is an apocalyptic number.

It is an amenable number.

6816501880 is an abundant number, since it is smaller than the sum of its proper divisors (8520627440).

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

6816501880 is a wasteful number, since it uses less digits than its factorization.

6816501880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 170412558 (or 170412554 counting only the distinct ones).

The product of its (nonzero) digits is 92160, while the sum is 43.

The square root of 6816501880 is about 82562.1092269329. The cubic root of 6816501880 is about 1896.0677566331.

The spelling of 6816501880 in words is "six billion, eight hundred sixteen million, five hundred one thousand, eight hundred eighty".