561100010000 has 50 divisors (see below), whose sum is σ = 1358479258422. Its totient is φ = 224440000000.

The previous prime is 561100009937. The next prime is 561100010033. The reversal of 561100010000 is 10001165.

It can be written as a sum of positive squares in 5 ways, for example, as 169559474176 + 391540535824 = 411776^2 + 625732^2 .

It is a tau number, because it is divible by the number of its divisors (50).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 28045001 + ... + 28065000.

Almost surely, 2^561100010000 is an apocalyptic number.

561100010000 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

561100010000 is an abundant number, since it is smaller than the sum of its proper divisors (797379248422).

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

561100010000 is an equidigital number, since it uses as much as digits as its factorization.

561100010000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56110029 (or 56110008 counting only the distinct ones).

The product of its (nonzero) digits is 30, while the sum is 14.

Adding to 561100010000 its reverse (10001165), we get a palindrome (561110011165).

The spelling of 561100010000 in words is "five hundred sixty-one billion, one hundred million, ten thousand".