6445066502 has 16 divisors (see below), whose sum is σ = 11086401312. Its totient is φ = 2752742400.

The previous prime is 6445066499. The next prime is 6445066547. The reversal of 6445066502 is 2056605446.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 781499 + ... + 789702.

It is an arithmetic number, because the mean of its divisors is an integer number (692900082).

Almost surely, 2^6445066502 is an apocalyptic number.

6445066502 is a deficient number, since it is larger than the sum of its proper divisors (4641334810).

6445066502 is a wasteful number, since it uses less digits than its factorization.

6445066502 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1571503.

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

The square root of 6445066502 is about 80281.1715285720. The cubic root of 6445066502 is about 1860.9832645637.

The spelling of 6445066502 in words is "six billion, four hundred forty-five million, sixty-six thousand, five hundred two".