105565015540 has 12 divisors (see below), whose sum is σ = 221686532676. Its totient is φ = 42226006208.

The previous prime is 105565015453. The next prime is 105565015541. The reversal of 105565015540 is 45510565501.

It can be written as a sum of positive squares in 2 ways, for example, as 37675586404 + 67889429136 = 194102^2 + 260556^2 .

It is a super-2 number, since 2×105565015540² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 105565015540.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (105565015541) 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 3 ways as a sum of consecutive naturals, for example, 2639125369 + ... + 2639125408.

It is an arithmetic number, because the mean of its divisors is an integer number (18473877723).

Almost surely, 2^105565015540 is an apocalyptic number.

105565015540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

105565015540 is an abundant number, since it is smaller than the sum of its proper divisors (116121517136).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

105565015540 is a wasteful number, since it uses less digits than its factorization.

105565015540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5278250786 (or 5278250784 counting only the distinct ones).

The product of its (nonzero) digits is 75000, while the sum is 37.

The spelling of 105565015540 in words is "one hundred five billion, five hundred sixty-five million, fifteen thousand, five hundred forty".