561643502332 has 24 divisors (see below), whose sum is σ = 1072289433600. Its totient is φ = 255277994160.

The previous prime is 561643502279. The next prime is 561643502333. The reversal of 561643502332 is 233205346165.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (561643502333) 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, 440419 + ... + 1147717.

It is an arithmetic number, because the mean of its divisors is an integer number (44678726400).

Almost surely, 2^561643502332 is an apocalyptic number.

It is an amenable number.

561643502332 is a deficient number, since it is larger than the sum of its proper divisors (510645931268).

561643502332 is a wasteful number, since it uses less digits than its factorization.

561643502332 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 725361 (or 725359 counting only the distinct ones).

The product of its (nonzero) digits is 388800, while the sum is 40.

Adding to 561643502332 its reverse (233205346165), we get a palindrome (794848848497).

The spelling of 561643502332 in words is "five hundred sixty-one billion, six hundred forty-three million, five hundred two thousand, three hundred thirty-two".