10500555565 has 8 divisors (see below), whose sum is σ = 12603084408. Its totient is φ = 8398832640.

The previous prime is 10500555487. The next prime is 10500555587. The reversal of 10500555565 is 56555500501.

10500555565 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 751362921 + 9749192644 = 27411^2 + 98738^2 .

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

It is not a de Polignac number, because 10500555565 - 2²⁷ = 10366337837 is a prime.

It is a super-2 number, since 2×10500555565² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 172432 + ... + 225241.

It is an arithmetic number, because the mean of its divisors is an integer number (1575385551).

Almost surely, 2^10500555565 is an apocalyptic number.

It is an amenable number.

10500555565 is a deficient number, since it is larger than the sum of its proper divisors (2102528843).

10500555565 is an equidigital number, since it uses as much as digits as its factorization.

10500555565 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 402959.

The product of its (nonzero) digits is 93750, while the sum is 37.

The spelling of 10500555565 in words is "ten billion, five hundred million, five hundred fifty-five thousand, five hundred sixty-five".