105561509101 has 4 divisors (see below), whose sum is σ = 108966719104. Its totient is φ = 102156299100.

The previous prime is 105561509099. The next prime is 105561509107. The reversal of 105561509101 is 101905165501.

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 105561509101 - 2¹ = 105561509099 is a prime.

It is a super-2 number, since 2×105561509101² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (105561509107) 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, 1702604955 + ... + 1702605016.

It is an arithmetic number, because the mean of its divisors is an integer number (27241679776).

Almost surely, 2^105561509101 is an apocalyptic number.

It is an amenable number.

105561509101 is a deficient number, since it is larger than the sum of its proper divisors (3405210003).

105561509101 is an equidigital number, since it uses as much as digits as its factorization.

105561509101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3405210002.

The product of its (nonzero) digits is 6750, while the sum is 34.

The spelling of 105561509101 in words is "one hundred five billion, five hundred sixty-one million, five hundred nine thousand, one hundred one".