6564550020850 has 24 divisors (see below), whose sum is σ = 12210145066548. Its totient is φ = 2625802368000.

The previous prime is 6564550020767. The next prime is 6564550020851. The reversal of 6564550020850 is 580200554656.

It can be written as a sum of positive squares in 6 ways, for example, as 1563382624609 + 5001167396241 = 1250353^2 + 2236329^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 6564550020850.

It is not an unprimeable number, because it can be changed into a prime (6564550020851) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9134650 + ... + 9827050.

Almost surely, 2^{6564550020850} is an apocalyptic number.

6564550020850 is a deficient number, since it is larger than the sum of its proper divisors (5645595045698).

6564550020850 is a wasteful number, since it uses less digits than its factorization.

6564550020850 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 882030 (or 882025 counting only the distinct ones).

The product of its (nonzero) digits is 1440000, while the sum is 46.

The spelling of 6564550020850 in words is "six trillion, five hundred sixty-four billion, five hundred fifty million, twenty thousand, eight hundred fifty".