6468287881 has 4 divisors (see below), whose sum is σ = 7056314064. Its totient is φ = 5880261700.

The previous prime is 6468287863. The next prime is 6468287887. The reversal of 6468287881 is 1887828646.

6468287881 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 6468287881 - 2⁵ = 6468287849 is a prime.

It is a super-2 number, since 2×6468287881² = 83677496222982940322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6468287887) 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, 294013075 + ... + 294013096.

It is an arithmetic number, because the mean of its divisors is an integer number (1764078516).

Almost surely, 2^6468287881 is an apocalyptic number.

It is an amenable number.

6468287881 is a deficient number, since it is larger than the sum of its proper divisors (588026183).

6468287881 is a wasteful number, since it uses less digits than its factorization.

6468287881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 588026182.

The product of its digits is 8257536, while the sum is 58.

The square root of 6468287881 is about 80425.6668048205. Note that the first 3 decimals coincide. The cubic root of 6468287881 is about 1863.2156077588.

The spelling of 6468287881 in words is "six billion, four hundred sixty-eight million, two hundred eighty-seven thousand, eight hundred eighty-one".