100550200661 has 4 divisors (see below), whose sum is σ = 100651665024. Its totient is φ = 100448736300.

The previous prime is 100550200649. The next prime is 100550200687. The reversal of 100550200661 is 166002055001.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 100550200661 - 2¹⁴ = 100550184277 is a prime.

It is a super-2 number, since 2×100550200661² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 100550200661.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100550205661) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 50730695 + ... + 50732676.

It is an arithmetic number, because the mean of its divisors is an integer number (25162916256).

Almost surely, 2^100550200661 is an apocalyptic number.

It is an amenable number.

100550200661 is a deficient number, since it is larger than the sum of its proper divisors (101464363).

100550200661 is an equidigital number, since it uses as much as digits as its factorization.

100550200661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101464362.

The product of its (nonzero) digits is 1800, while the sum is 26.

Adding to 100550200661 its reverse (166002055001), we get a palindrome (266552255662).

The spelling of 100550200661 in words is "one hundred billion, five hundred fifty million, two hundred thousand, six hundred sixty-one".