561641324641 has 8 divisors (see below), whose sum is σ = 581746547520. Its totient is φ = 541585320528.

The previous prime is 561641324633. The next prime is 561641324663. The reversal of 561641324641 is 146423146165.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 561641324641 - 2³ = 561641324633 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (561641324611) 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, 12281461 + ... + 12327106.

It is an arithmetic number, because the mean of its divisors is an integer number (72718318440).

Almost surely, 2^561641324641 is an apocalyptic number.

It is an amenable number.

561641324641 is a deficient number, since it is larger than the sum of its proper divisors (20105222879).

561641324641 is a wasteful number, since it uses less digits than its factorization.

561641324641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24609383.

The product of its digits is 414720, while the sum is 43.

The spelling of 561641324641 in words is "five hundred sixty-one billion, six hundred forty-one million, three hundred twenty-four thousand, six hundred forty-one".