561767541169 has 4 divisors (see below), whose sum is σ = 586192216896. Its totient is φ = 537342865444.

The previous prime is 561767541131. The next prime is 561767541187. The reversal of 561767541169 is 961145767165.

It is a happy number.

561767541169 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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.

It is a cyclic number.

It is not a de Polignac number, because 561767541169 - 2²⁷ = 561633323441 is a prime.

It is a super-3 number, since 3×561767541169³ (a number of 36 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (561767541199) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12212337829 + ... + 12212337874.

It is an arithmetic number, because the mean of its divisors is an integer number (146548054224).

Almost surely, 2^561767541169 is an apocalyptic number.

It is an amenable number.

561767541169 is a deficient number, since it is larger than the sum of its proper divisors (24424675727).

561767541169 is a wasteful number, since it uses less digits than its factorization.

561767541169 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24424675726.

The product of its digits is 9525600, while the sum is 58.

The spelling of 561767541169 in words is "five hundred sixty-one billion, seven hundred sixty-seven million, five hundred forty-one thousand, one hundred sixty-nine".