6423041668 has 6 divisors (see below), whose sum is σ = 11240322926. Its totient is φ = 3211520832.

The previous prime is 6423041657. The next prime is 6423041707. The reversal of 6423041668 is 8661403246.

It can be written as a sum of positive squares in only one way, i.e., 4545726084 + 1877315584 = 67422^2 + 43328^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 6423041668.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 802880205 + ... + 802880212.

Almost surely, 2^6423041668 is an apocalyptic number.

It is an amenable number.

6423041668 is a deficient number, since it is larger than the sum of its proper divisors (4817281258).

6423041668 is a wasteful number, since it uses less digits than its factorization.

6423041668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1605760421 (or 1605760419 counting only the distinct ones).

The product of its (nonzero) digits is 165888, while the sum is 40.

The square root of 6423041668 is about 80143.8810390413. The cubic root of 6423041668 is about 1858.8609887736.

The spelling of 6423041668 in words is "six billion, four hundred twenty-three million, forty-one thousand, six hundred sixty-eight".