110005550661 has 4 divisors (see below), whose sum is σ = 146674067552. Its totient is φ = 73337033772.

The previous prime is 110005550659. The next prime is 110005550687. The reversal of 110005550661 is 166055500011.

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 not a de Polignac number, because 110005550661 - 2¹ = 110005550659 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (110005550261) 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, 18334258441 + ... + 18334258446.

It is an arithmetic number, because the mean of its divisors is an integer number (36668516888).

Almost surely, 2^110005550661 is an apocalyptic number.

It is an amenable number.

110005550661 is a deficient number, since it is larger than the sum of its proper divisors (36668516891).

110005550661 is an equidigital number, since it uses as much as digits as its factorization.

110005550661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36668516890.

The product of its (nonzero) digits is 4500, while the sum is 30.

The spelling of 110005550661 in words is "one hundred ten billion, five million, five hundred fifty thousand, six hundred sixty-one".