10628985509 has 8 divisors (see below), whose sum is σ = 10890021912. Its totient is φ = 10368034560.

The previous prime is 10628985503. The next prime is 10628985517. The reversal of 10628985509 is 90558982601.

10628985509 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 195384484 + 10433601025 = 13978^2 + 102145^2 .

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 10628985509 - 2²⁰ = 10627936933 is a prime.

It is a super-2 number, since 2×10628985509² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10628985503) 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 7 ways as a sum of consecutive naturals, for example, 282977 + ... + 318329.

It is an arithmetic number, because the mean of its divisors is an integer number (1361252739).

Almost surely, 2^10628985509 is an apocalyptic number.

It is an amenable number.

10628985509 is a deficient number, since it is larger than the sum of its proper divisors (261036403).

10628985509 is an equidigital number, since it uses as much as digits as its factorization.

10628985509 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42727.

The product of its (nonzero) digits is 1555200, while the sum is 53.

The spelling of 10628985509 in words is "ten billion, six hundred twenty-eight million, nine hundred eighty-five thousand, five hundred nine".