561369892033 has 4 divisors (see below), whose sum is σ = 569059890628. Its totient is φ = 553679893440.

The previous prime is 561369892021. The next prime is 561369892037. The reversal of 561369892033 is 330298963165.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 330298963165 = 5 ⋅66059792633.

It can be written as a sum of positive squares in 2 ways, for example, as 169659138609 + 391710753424 = 411897^2 + 625868^2 .

It is a cyclic number.

It is not a de Polignac number, because 561369892033 - 2⁹ = 561369891521 is a prime.

It is a super-2 number, since 2×561369892033² (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 (561369892037) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3844999188 + ... + 3844999333.

It is an arithmetic number, because the mean of its divisors is an integer number (142264972657).

Almost surely, 2^561369892033 is an apocalyptic number.

It is an amenable number.

561369892033 is a deficient number, since it is larger than the sum of its proper divisors (7689998595).

561369892033 is an equidigital number, since it uses as much as digits as its factorization.

561369892033 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7689998594.

The product of its (nonzero) digits is 6298560, while the sum is 55.

The spelling of 561369892033 in words is "five hundred sixty-one billion, three hundred sixty-nine million, eight hundred ninety-two thousand, thirty-three".