10644163455540 has 24 divisors (see below), whose sum is σ = 29803657675680. Its totient is φ = 2838443588128.

The previous prime is 10644163455509. The next prime is 10644163455577. The reversal of 10644163455540 is 4555436144601.

It is a super-2 number, since 2×10644163455540² (a number of 27 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 10644163455540.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 88701362070 + ... + 88701362189.

It is an arithmetic number, because the mean of its divisors is an integer number (1241819069820).

Almost surely, 2^{10644163455540} is an apocalyptic number.

10644163455540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

10644163455540 is an abundant number, since it is smaller than the sum of its proper divisors (19159494220140).

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

10644163455540 is a wasteful number, since it uses less digits than its factorization.

10644163455540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 177402724271 (or 177402724269 counting only the distinct ones).

The product of its (nonzero) digits is 3456000, while the sum is 48.

The spelling of 10644163455540 in words is "ten trillion, six hundred forty-four billion, one hundred sixty-three million, four hundred fifty-five thousand, five hundred forty".