4263981333481 has 27 divisors (see below), whose sum is σ = 4485882575223. Its totient is φ = 4052900999520.

The previous prime is 4263981333431. The next prime is 4263981333533. The reversal of 4263981333481 is 1843331893624.

It is a happy number.

The square root of 4263981333481 is 2064941.

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., 362092231081 + 3901889102400 = 601741^2 + 1975320^2 .

It is not a de Polignac number, because 4263981333481 - 2⁹ = 4263981332969 is a prime.

It is a super-2 number, since 2×4263981333481² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4263981333431) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 3776776525 + ... + 3776777653.

Almost surely, 2^{4263981333481} is an apocalyptic number.

4263981333481 is the 2064941-st square number.

4263981333481 is the 1032471-st centered octagonal number.

It is an amenable number.

4263981333481 is a deficient number, since it is larger than the sum of its proper divisors (221901241742).

4263981333481 is an frugal number, since it uses more digits than its factorization.

4263981333481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2438 (or 1219 counting only the distinct ones).

The product of its digits is 8957952, while the sum is 55.

The spelling of 4263981333481 in words is "four trillion, two hundred sixty-three billion, nine hundred eighty-one million, three hundred thirty-three thousand, four hundred eighty-one".