561121712 has 10 divisors (see below), whose sum is σ = 1087173348. Its totient is φ = 280560848.

The previous prime is 561121711. The next prime is 561121739. The reversal of 561121712 is 217121165.

It is not an unprimeable number, because it can be changed into a prime (561121711) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 17535038 + ... + 17535069.

Almost surely, 2^561121712 is an apocalyptic number.

It is an amenable number.

561121712 is a deficient number, since it is larger than the sum of its proper divisors (526051636).

561121712 is a wasteful number, since it uses less digits than its factorization.

561121712 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35070115 (or 35070109 counting only the distinct ones).

The product of its digits is 840, while the sum is 26.

The square root of 561121712 is about 23688.0077676448. The cubic root of 561121712 is about 824.8070375766.

Adding to 561121712 its reverse (217121165), we get a palindrome (778242877).

The spelling of 561121712 in words is "five hundred sixty-one million, one hundred twenty-one thousand, seven hundred twelve".