561100050056 has 32 divisors (see below), whose sum is σ = 1294846271040. Its totient is φ = 221973645888.

The previous prime is 561100050053. The next prime is 561100050079. The reversal of 561100050056 is 650050001165.

It is not an unprimeable number, because it can be changed into a prime (561100050053) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 385370186 + ... + 385371641.

It is an arithmetic number, because the mean of its divisors is an integer number (40463945970).

Almost surely, 2^561100050056 is an apocalyptic number.

561100050056 is a gapful number since it is divisible by the number (56) formed by its first and last digit.

It is an amenable number.

561100050056 is an abundant number, since it is smaller than the sum of its proper divisors (733746220984).

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

561100050056 is a wasteful number, since it uses less digits than its factorization.

561100050056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 770741853 (or 770741849 counting only the distinct ones).

The product of its (nonzero) digits is 4500, while the sum is 29.

The spelling of 561100050056 in words is "five hundred sixty-one billion, one hundred million, fifty thousand, fifty-six".