6645454462 has 16 divisors (see below), whose sum is σ = 10556110080. Its totient is φ = 3126809088.

The previous prime is 6645454441. The next prime is 6645454463. The reversal of 6645454462 is 2644545466.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6645454463) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 354214 + ... + 372502.

It is an arithmetic number, because the mean of its divisors is an integer number (659756880).

Almost surely, 2^6645454462 is an apocalyptic number.

6645454462 is a deficient number, since it is larger than the sum of its proper divisors (3910655618).

6645454462 is a wasteful number, since it uses less digits than its factorization.

6645454462 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28995.

The product of its digits is 2764800, while the sum is 46.

The square root of 6645454462 is about 81519.6569055587. The cubic root of 6645454462 is about 1880.0737919957.

The spelling of 6645454462 in words is "six billion, six hundred forty-five million, four hundred fifty-four thousand, four hundred sixty-two".