6645445466 has 8 divisors (see below), whose sum is σ = 10874365344. Its totient is φ = 3020657020.

The previous prime is 6645445441. The next prime is 6645445481.

6645445466 is nontrivially palindromic in base 10.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 151032830 + ... + 151032873.

It is an arithmetic number, because the mean of its divisors is an integer number (1359295668).

Almost surely, 2^6645445466 is an apocalyptic number.

6645445466 is a deficient number, since it is larger than the sum of its proper divisors (4228919878).

6645445466 is a wasteful number, since it uses less digits than its factorization.

6645445466 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 302065716.

The product of its digits is 8294400, while the sum is 50.

The square root of 6645445466 is about 81519.6017286640. The cubic root of 6645445466 is about 1880.0729436388.

The spelling of 6645445466 in words is "six billion, six hundred forty-five million, four hundred forty-five thousand, four hundred sixty-six".