561641324611 has 2 divisors, whose sum is σ = 561641324612. Its totient is φ = 561641324610.

The previous prime is 561641324597. The next prime is 561641324633. The reversal of 561641324611 is 116423146165.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 561641324611 - 2¹³ = 561641316419 is a prime.

It is a super-3 number, since 3×561641324611³ (a number of 36 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (561641354611) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 280820662305 + 280820662306.

It is an arithmetic number, because the mean of its divisors is an integer number (280820662306).

Almost surely, 2^561641324611 is an apocalyptic number.

561641324611 is a deficient number, since it is larger than the sum of its proper divisors (1).

561641324611 is an equidigital number, since it uses as much as digits as its factorization.

561641324611 is an evil number, because the sum of its binary digits is even.

The product of its digits is 103680, while the sum is 40.

The spelling of 561641324611 in words is "five hundred sixty-one billion, six hundred forty-one million, three hundred twenty-four thousand, six hundred eleven".