10628644487 has 4 divisors (see below), whose sum is σ = 10632541920. Its totient is φ = 10624747056.

The previous prime is 10628644483. The next prime is 10628644489. The reversal of 10628644487 is 78444682601.

It is a happy number.

10628644487 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 78444682601 = 131 ⋅598814371.

It is a cyclic number.

It is not a de Polignac number, because 10628644487 - 2² = 10628644483 is a prime.

It is a super-2 number, since 2×10628644487² (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 (10628644483) 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, 1944623 + ... + 1950080.

It is an arithmetic number, because the mean of its divisors is an integer number (2658135480).

Almost surely, 2^10628644487 is an apocalyptic number.

10628644487 is a deficient number, since it is larger than the sum of its proper divisors (3897433).

10628644487 is an equidigital number, since it uses as much as digits as its factorization.

10628644487 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3897432.

The product of its (nonzero) digits is 2064384, while the sum is 50.

The spelling of 10628644487 in words is "ten billion, six hundred twenty-eight million, six hundred forty-four thousand, four hundred eighty-seven".