100565105640 has 32 divisors (see below), whose sum is σ = 301695317280. Its totient is φ = 26817361472.

The previous prime is 100565105617. The next prime is 100565105689. The reversal of 100565105640 is 46501565001.

100565105640 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×100565105640² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 419021154 + ... + 419021393.

It is an arithmetic number, because the mean of its divisors is an integer number (9427978665).

Almost surely, 2^100565105640 is an apocalyptic number.

100565105640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

100565105640 is an abundant number, since it is smaller than the sum of its proper divisors (201130211640).

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

100565105640 is a wasteful number, since it uses less digits than its factorization.

100565105640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 838042561 (or 838042557 counting only the distinct ones).

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

The spelling of 100565105640 in words is "one hundred billion, five hundred sixty-five million, one hundred five thousand, six hundred forty".