6563390044 has 24 divisors (see below), whose sum is σ = 11988094608. Its totient is φ = 3141240960.

The previous prime is 6563390021. The next prime is 6563390047. The reversal of 6563390044 is 4400933656.

It is a hoax number, since the sum of its digits (40) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 6563389979 and 6563390006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6563390047) 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, 368862 + ... + 386245.

It is an arithmetic number, because the mean of its divisors is an integer number (499503942).

Almost surely, 2^6563390044 is an apocalyptic number.

It is an amenable number.

6563390044 is a deficient number, since it is larger than the sum of its proper divisors (5424704564).

6563390044 is a wasteful number, since it uses less digits than its factorization.

6563390044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 755205 (or 755203 counting only the distinct ones).

The product of its (nonzero) digits is 233280, while the sum is 40.

The square root of 6563390044 is about 81014.7520146794. The cubic root of 6563390044 is about 1872.3027333078.

The spelling of 6563390044 in words is "six billion, five hundred sixty-three million, three hundred ninety thousand, forty-four".