5540663643 has 16 divisors (see below), whose sum is σ = 7663986720. Its totient is φ = 3556281344.

The previous prime is 5540663641. The next prime is 5540663677. The reversal of 5540663643 is 3463660455.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 5540663643 - 2¹ = 5540663641 is a prime.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 5540663595 and 5540663604.

It is not an unprimeable number, because it can be changed into a prime (5540663641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 59496 + ... + 120917.

It is an arithmetic number, because the mean of its divisors is an integer number (478999170).

Almost surely, 2^5540663643 is an apocalyptic number.

5540663643 is a deficient number, since it is larger than the sum of its proper divisors (2123323077).

5540663643 is a wasteful number, since it uses less digits than its factorization.

5540663643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 180798.

The product of its (nonzero) digits is 777600, while the sum is 42.

The square root of 5540663643 is about 74435.6342285064. The cubic root of 5540663643 is about 1769.5136973573.

The spelling of 5540663643 in words is "five billion, five hundred forty million, six hundred sixty-three thousand, six hundred forty-three".