561111673332 has 48 divisors (see below), whose sum is σ = 1504131858432. Its totient is φ = 159478257120.

The previous prime is 561111673229. The next prime is 561111673337. The reversal of 561111673332 is 233376111165.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (561111673337) 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 15 ways as a sum of consecutive naturals, for example, 17470608 + ... + 17502695.

It is an arithmetic number, because the mean of its divisors is an integer number (31336080384).

Almost surely, 2^561111673332 is an apocalyptic number.

It is an amenable number.

561111673332 is an abundant number, since it is smaller than the sum of its proper divisors (943020185100).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

561111673332 is a wasteful number, since it uses less digits than its factorization.

561111673332 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34973508 (or 34973506 counting only the distinct ones).

The product of its digits is 68040, while the sum is 39.

Adding to 561111673332 its reverse (233376111165), we get a palindrome (794487784497).

The spelling of 561111673332 in words is "five hundred sixty-one billion, one hundred eleven million, six hundred seventy-three thousand, three hundred thirty-two".