4543863509956 has 9 divisors (see below), whose sum is σ = 7951768603149. Its totient is φ = 2271929623344.

The previous prime is 4543863509891. The next prime is 4543863509959. The reversal of 4543863509956 is 6599053683454.

The square root of 4543863509956 is 2131634.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 1244496424900 + 3299367085056 = 1115570^2 + 1816416^2 .

It is a super-2 number, since 2×4543863509956² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 4543863509891 and 4543863509900.

It is not an unprimeable number, because it can be changed into a prime (4543863509959) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 3730360 + ... + 4796176.

Almost surely, 2^{4543863509956} is an apocalyptic number.

4543863509956 is the 2131634-th square number.

It is an amenable number.

4543863509956 is a deficient number, since it is larger than the sum of its proper divisors (3407905093193).

4543863509956 is an frugal number, since it uses more digits than its factorization.

4543863509956 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2131638 (or 1065819 counting only the distinct ones).

The product of its (nonzero) digits is 419904000, while the sum is 67.

The spelling of 4543863509956 in words is "four trillion, five hundred forty-three billion, eight hundred sixty-three million, five hundred nine thousand, nine hundred fifty-six".