100561045266 has 96 divisors (see below), whose sum is σ = 254444875776. Its totient is φ = 29489994000.

The previous prime is 100561045259. The next prime is 100561045309. The reversal of 100561045266 is 662540165001.

100561045266 is a `hidden beast` number, since 10 + 0 + 5 + 610 + 4 + 5 + 26 + 6 = 666.

It is a super-2 number, since 2×100561045266² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 100561045266.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 137670 + ... + 469121.

It is an arithmetic number, because the mean of its divisors is an integer number (2650467456).

Almost surely, 2^100561045266 is an apocalyptic number.

100561045266 is an abundant number, since it is smaller than the sum of its proper divisors (153883830510).

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

100561045266 is a wasteful number, since it uses less digits than its factorization.

100561045266 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 606850 (or 606838 counting only the distinct ones).

The product of its (nonzero) digits is 43200, while the sum is 36.

The spelling of 100561045266 in words is "one hundred billion, five hundred sixty-one million, forty-five thousand, two hundred sixty-six".