105520654581 has 16 divisors (see below), whose sum is σ = 149002566144. Its totient is φ = 66284223984.

The previous prime is 105520654537. The next prime is 105520654607. The reversal of 105520654581 is 185456025501.

It is not a de Polignac number, because 105520654581 - 2¹¹ = 105520652533 is a prime.

It is a super-2 number, since 2×105520654581² (a number of 23 digits) contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (105520654501) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11407951 + ... + 11417196.

It is an arithmetic number, because the mean of its divisors is an integer number (9312660384).

Almost surely, 2^105520654581 is an apocalyptic number.

It is an amenable number.

105520654581 is a deficient number, since it is larger than the sum of its proper divisors (43481911563).

105520654581 is a wasteful number, since it uses less digits than its factorization.

105520654581 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22825240.

The product of its (nonzero) digits is 240000, while the sum is 42.

The spelling of 105520654581 in words is "one hundred five billion, five hundred twenty million, six hundred fifty-four thousand, five hundred eighty-one".