100561045056 has 56 divisors (see below), whose sum is σ = 272557244064. Its totient is φ = 32702776320.

The previous prime is 100561045043. The next prime is 100561045063. The reversal of 100561045056 is 650540165001.

It is a super-2 number, since 2×100561045056² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6379390 + ... + 6395133.

It is an arithmetic number, because the mean of its divisors is an integer number (4867093644).

Almost surely, 2^100561045056 is an apocalyptic number.

100561045056 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

100561045056 is an abundant number, since it is smaller than the sum of its proper divisors (171996199008).

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

100561045056 is a wasteful number, since it uses less digits than its factorization.

100561045056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12774579 (or 12774569 counting only the distinct ones).

The product of its (nonzero) digits is 18000, while the sum is 33.

The spelling of 100561045056 in words is "one hundred billion, five hundred sixty-one million, forty-five thousand, fifty-six".