6645422026 has 32 divisors (see below), whose sum is σ = 11346428160. Its totient is φ = 2899616256.

The previous prime is 6645422023. The next prime is 6645422089. The reversal of 6645422026 is 6202245466.

It is not an unprimeable number, because it can be changed into a prime (6645422023) 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, 79075 + ... + 139798.

It is an arithmetic number, because the mean of its divisors is an integer number (354575880).

Almost surely, 2^6645422026 is an apocalyptic number.

6645422026 is a deficient number, since it is larger than the sum of its proper divisors (4701006134).

6645422026 is a wasteful number, since it uses less digits than its factorization.

6645422026 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 218958.

The product of its (nonzero) digits is 138240, while the sum is 37.

The square root of 6645422026 is about 81519.4579594344. The cubic root of 6645422026 is about 1880.0707331543.

The spelling of 6645422026 in words is "six billion, six hundred forty-five million, four hundred twenty-two thousand, twenty-six".