105561055011 has 4 divisors (see below), whose sum is σ = 140748073352. Its totient is φ = 70374036672.

The previous prime is 105561054997. The next prime is 105561055063. The reversal of 105561055011 is 110550165501.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 105561055011 - 2⁶ = 105561054947 is a prime.

It is a super-2 number, since 2×105561055011² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 105561055011.

It is not an unprimeable number, because it can be changed into a prime (105561055081) 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, 17593509166 + ... + 17593509171.

It is an arithmetic number, because the mean of its divisors is an integer number (35187018338).

Almost surely, 2^105561055011 is an apocalyptic number.

105561055011 is a deficient number, since it is larger than the sum of its proper divisors (35187018341).

105561055011 is an equidigital number, since it uses as much as digits as its factorization.

105561055011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35187018340.

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

The spelling of 105561055011 in words is "one hundred five billion, five hundred sixty-one million, fifty-five thousand, eleven".