110661605011 has 4 divisors (see below), whose sum is σ = 110913682000. Its totient is φ = 110409528024.

The previous prime is 110661604979. The next prime is 110661605027. The reversal of 110661605011 is 110506166011.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 110506166011 = 397 ⋅278353063.

It is a cyclic number.

It is not a de Polignac number, because 110661605011 - 2⁵ = 110661604979 is a prime.

It is a super-2 number, since 2×110661605011² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (110661605081) 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 3 ways as a sum of consecutive naturals, for example, 126037836 + ... + 126038713.

It is an arithmetic number, because the mean of its divisors is an integer number (27728420500).

Almost surely, 2^110661605011 is an apocalyptic number.

110661605011 is a deficient number, since it is larger than the sum of its proper divisors (252076989).

110661605011 is an equidigital number, since it uses as much as digits as its factorization.

110661605011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 252076988.

The product of its (nonzero) digits is 1080, while the sum is 28.

The spelling of 110661605011 in words is "one hundred ten billion, six hundred sixty-one million, six hundred five thousand, eleven".