561103186801 has 2 divisors, whose sum is σ = 561103186802. Its totient is φ = 561103186800.

The previous prime is 561103186789. The next prime is 561103186843. The reversal of 561103186801 is 108681301165.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 515307186801 + 45796000000 = 717849^2 + 214000^2 .

It is a cyclic number.

It is not a de Polignac number, because 561103186801 - 2³⁷ = 423664233329 is a prime.

It is a super-2 number, since 2×561103186801² (a number of 24 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (561103186601) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 280551593400 + 280551593401.

It is an arithmetic number, because the mean of its divisors is an integer number (280551593401).

Almost surely, 2^561103186801 is an apocalyptic number.

It is an amenable number.

561103186801 is a deficient number, since it is larger than the sum of its proper divisors (1).

561103186801 is an equidigital number, since it uses as much as digits as its factorization.

561103186801 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 34560, while the sum is 40.

Adding to 561103186801 its reverse (108681301165), we get a palindrome (669784487966).

The spelling of 561103186801 in words is "five hundred sixty-one billion, one hundred three million, one hundred eighty-six thousand, eight hundred one".