105605551011 has 8 divisors (see below), whose sum is σ = 140978911824. Its totient is φ = 70317945440.

The previous prime is 105605550979. The next prime is 105605551067. The reversal of 105605551011 is 110155506501.

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

It is a cyclic number.

It is not a de Polignac number, because 105605551011 - 2⁵ = 105605550979 is a prime.

It is a super-3 number, since 3×105605551011³ (a number of 34 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a self number, because there is not a number n which added to its sum of digits gives 105605551011.

It is not an unprimeable number, because it can be changed into a prime (105605551411) 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, 21435936 + ... + 21440861.

It is an arithmetic number, because the mean of its divisors is an integer number (17622363978).

Almost surely, 2^105605551011 is an apocalyptic number.

105605551011 is a deficient number, since it is larger than the sum of its proper divisors (35373360813).

105605551011 is an equidigital number, since it uses as much as digits as its factorization.

105605551011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42877621.

The product of its (nonzero) digits is 3750, while the sum is 30.

The spelling of 105605551011 in words is "one hundred five billion, six hundred five million, five hundred fifty-one thousand, eleven".