105500555561 has 8 divisors (see below), whose sum is σ = 117585758880. Its totient is φ = 94068606528.

The previous prime is 105500555549. The next prime is 105500555569. The reversal of 105500555561 is 165555005501.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-105500555561 is a prime.

It is a super-2 number, since 2×105500555561² (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 (105500555569) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 163313231 + ... + 163313876.

It is an arithmetic number, because the mean of its divisors is an integer number (14698219860).

Almost surely, 2^105500555561 is an apocalyptic number.

It is an amenable number.

105500555561 is a deficient number, since it is larger than the sum of its proper divisors (12085203319).

105500555561 is a wasteful number, since it uses less digits than its factorization.

105500555561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 326627143.

The product of its (nonzero) digits is 93750, while the sum is 38.

The spelling of 105500555561 in words is "one hundred five billion, five hundred million, five hundred fifty-five thousand, five hundred sixty-one".