561760384481 has 4 divisors (see below), whose sum is σ = 561761922864. Its totient is φ = 561758846100.

The previous prime is 561760384433. The next prime is 561760384487. The reversal of 561760384481 is 184483067165.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 561760384481 - 2⁶ = 561760384417 is a prime.

It is a super-2 number, since 2×561760384481² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (561760384487) 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 3 ways as a sum of consecutive naturals, for example, 125246 + ... + 1067336.

It is an arithmetic number, because the mean of its divisors is an integer number (140440480716).

Almost surely, 2^561760384481 is an apocalyptic number.

It is an amenable number.

561760384481 is a deficient number, since it is larger than the sum of its proper divisors (1538383).

561760384481 is an equidigital number, since it uses as much as digits as its factorization.

561760384481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1538382.

The product of its (nonzero) digits is 3870720, while the sum is 53.

The spelling of 561760384481 in words is "five hundred sixty-one billion, seven hundred sixty million, three hundred eighty-four thousand, four hundred eighty-one".