641564210522 has 16 divisors (see below), whose sum is σ = 974349492480. Its totient is φ = 316795210368.

The previous prime is 641564210503. The next prime is 641564210527. The reversal of 641564210522 is 225012465146.

It is not an unprimeable number, because it can be changed into a prime (641564210527) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3450122 + ... + 3631317.

It is an arithmetic number, because the mean of its divisors is an integer number (60896843280).

Almost surely, 2^641564210522 is an apocalyptic number.

641564210522 is a deficient number, since it is larger than the sum of its proper divisors (332785281958).

641564210522 is a wasteful number, since it uses less digits than its factorization.

641564210522 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7082005.

The product of its (nonzero) digits is 115200, while the sum is 38.

Adding to 641564210522 its reverse (225012465146), we get a palindrome (866576675668).

The spelling of 641564210522 in words is "six hundred forty-one billion, five hundred sixty-four million, two hundred ten thousand, five hundred twenty-two".