110556105561 has 24 divisors (see below), whose sum is σ = 178917994944. Its totient is φ = 65192787360.

The previous prime is 110556105551. The next prime is 110556105599. The reversal of 110556105561 is 165501655011.

It is a happy number.

It is not a de Polignac number, because 110556105561 - 2¹⁰ = 110556104537 is a prime.

It is not an unprimeable number, because it can be changed into a prime (110556105511) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 15087261 + ... + 15094586.

It is an arithmetic number, because the mean of its divisors is an integer number (7454916456).

Almost surely, 2^110556105561 is an apocalyptic number.

110556105561 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

110556105561 is a deficient number, since it is larger than the sum of its proper divisors (68361889383).

110556105561 is a wasteful number, since it uses less digits than its factorization.

110556105561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30181901 (or 30181898 counting only the distinct ones).

The product of its (nonzero) digits is 22500, while the sum is 36.

The spelling of 110556105561 in words is "one hundred ten billion, five hundred fifty-six million, one hundred five thousand, five hundred sixty-one".