4451423668 has 24 divisors (see below), whose sum is σ = 7906719744. Its totient is φ = 2192416800.

The previous prime is 4451423663. The next prime is 4451423687. The reversal of 4451423668 is 8663241544.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4451423663) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 344973 + ... + 357643.

It is an arithmetic number, because the mean of its divisors is an integer number (329446656).

Almost surely, 2^4451423668 is an apocalyptic number.

It is an amenable number.

4451423668 is a deficient number, since it is larger than the sum of its proper divisors (3455296076).

4451423668 is a wasteful number, since it uses less digits than its factorization.

4451423668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13983 (or 13981 counting only the distinct ones).

The product of its digits is 552960, while the sum is 43.

The square root of 4451423668 is about 66718.9903101059. The cubic root of 4451423668 is about 1645.0015450693.

The spelling of 4451423668 in words is "four billion, four hundred fifty-one million, four hundred twenty-three thousand, six hundred sixty-eight".