10644667008 has 64 divisors (see below), whose sum is σ = 29763069600. Its totient is φ = 3361471488.

The previous prime is 10644667003. The next prime is 10644667021. The reversal of 10644667008 is 80076644601.

It is a tau number, because it is divible by the number of its divisors (64).

It is a super-2 number, since 2×10644667008² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (10644667001) 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, 722191 + ... + 736782.

Almost surely, 2^10644667008 is an apocalyptic number.

It is an amenable number.

10644667008 is an abundant number, since it is smaller than the sum of its proper divisors (19118402592).

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

10644667008 is a wasteful number, since it uses less digits than its factorization.

10644667008 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1459009 (or 1458997 counting only the distinct ones).

The product of its (nonzero) digits is 193536, while the sum is 42.

The spelling of 10644667008 in words is "ten billion, six hundred forty-four million, six hundred sixty-seven thousand, eight".