100555605558 has 24 divisors (see below), whose sum is σ = 218037224808. Its totient is φ = 33492881952.

The previous prime is 100555605551. The next prime is 100555605569. The reversal of 100555605558 is 855506555001.

It is a super-3 number, since 3×100555605558³ (a number of 34 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100555605551) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 2113591 + ... + 2160642.

It is an arithmetic number, because the mean of its divisors is an integer number (9084884367).

Almost surely, 2^100555605558 is an apocalyptic number.

100555605558 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

100555605558 is an abundant number, since it is smaller than the sum of its proper divisors (117481619250).

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

100555605558 is a wasteful number, since it uses less digits than its factorization.

100555605558 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4275548 (or 4275545 counting only the distinct ones).

The product of its (nonzero) digits is 750000, while the sum is 45.

The spelling of 100555605558 in words is "one hundred billion, five hundred fifty-five million, six hundred five thousand, five hundred fifty-eight".