10644325989 has 8 divisors (see below), whose sum is σ = 15482656032. Its totient is φ = 6451106640.

The previous prime is 10644325981. The next prime is 10644326039. The reversal of 10644325989 is 98952344601.

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

It is not a de Polignac number, because 10644325989 - 2³ = 10644325981 is a prime.

It is a super-2 number, since 2×10644325989² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10644325981) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 161277634 + ... + 161277699.

It is an arithmetic number, because the mean of its divisors is an integer number (1935332004).

Almost surely, 2^10644325989 is an apocalyptic number.

It is an amenable number.

10644325989 is a deficient number, since it is larger than the sum of its proper divisors (4838330043).

10644325989 is a wasteful number, since it uses less digits than its factorization.

10644325989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 322555347.

The product of its (nonzero) digits is 1866240, while the sum is 51.

It can be divided in two parts, 10644 and 325989, that added together give a palindrome (336633).

The spelling of 10644325989 in words is "ten billion, six hundred forty-four million, three hundred twenty-five thousand, nine hundred eighty-nine".