6402045566 has 16 divisors (see below), whose sum is σ = 10984735104. Its totient is φ = 2741283864.

The previous prime is 6402045563. The next prime is 6402045571. The reversal of 6402045566 is 6655402046.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6402045563) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 187880 + ... + 219323.

It is an arithmetic number, because the mean of its divisors is an integer number (686545944).

Almost surely, 2^6402045566 is an apocalyptic number.

6402045566 is a deficient number, since it is larger than the sum of its proper divisors (4582689538).

6402045566 is a wasteful number, since it uses less digits than its factorization.

6402045566 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 408335.

The product of its (nonzero) digits is 172800, while the sum is 38.

The square root of 6402045566 is about 80012.7837660958. The cubic root of 6402045566 is about 1856.8333181310.

The spelling of 6402045566 in words is "six billion, four hundred two million, forty-five thousand, five hundred sixty-six".