561166722334 has 16 divisors (see below), whose sum is σ = 843111244800. Its totient is φ = 280129726744.

The previous prime is 561166722287. The next prime is 561166722353. The reversal of 561166722334 is 433227661165.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21637827 + ... + 21663745.

It is an arithmetic number, because the mean of its divisors is an integer number (52694452800).

Almost surely, 2^561166722334 is an apocalyptic number.

561166722334 is a deficient number, since it is larger than the sum of its proper divisors (281944522466).

561166722334 is a wasteful number, since it uses less digits than its factorization.

561166722334 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43007.

The product of its digits is 1088640, while the sum is 46.

The spelling of 561166722334 in words is "five hundred sixty-one billion, one hundred sixty-six million, seven hundred twenty-two thousand, three hundred thirty-four".