561126626652 has 12 divisors (see below), whose sum is σ = 1309295462216. Its totient is φ = 187042208880.

The previous prime is 561126626639. The next prime is 561126626653. The reversal of 561126626652 is 256626621165.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×561126626652² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (561126626653) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23380276099 + ... + 23380276122.

Almost surely, 2^561126626652 is an apocalyptic number.

It is an amenable number.

561126626652 is an abundant number, since it is smaller than the sum of its proper divisors (748168835564).

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

561126626652 is a wasteful number, since it uses less digits than its factorization.

561126626652 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46760552228 (or 46760552226 counting only the distinct ones).

The product of its digits is 1555200, while the sum is 48.

The spelling of 561126626652 in words is "five hundred sixty-one billion, one hundred twenty-six million, six hundred twenty-six thousand, six hundred fifty-two".