561551551108 has 24 divisors (see below), whose sum is σ = 983669463000. Its totient is φ = 280503225600.

The previous prime is 561551551103. The next prime is 561551551117. The reversal of 561551551108 is 801155155165.

It can be written as a sum of positive squares in 4 ways, for example, as 134125877824 + 427425673284 = 366232^2 + 653778^2 .

It is not an unprimeable number, because it can be changed into a prime (561551551103) 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 7 ways as a sum of consecutive naturals, for example, 39402768 + ... + 39417016.

It is an arithmetic number, because the mean of its divisors is an integer number (40986227625).

Almost surely, 2^561551551108 is an apocalyptic number.

It is an amenable number.

561551551108 is a deficient number, since it is larger than the sum of its proper divisors (422117911892).

561551551108 is a wasteful number, since it uses less digits than its factorization.

561551551108 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23127 (or 23125 counting only the distinct ones).

The product of its (nonzero) digits is 150000, while the sum is 43.

The spelling of 561551551108 in words is "five hundred sixty-one billion, five hundred fifty-one million, five hundred fifty-one thousand, one hundred eight".