5489681802049 has 9 divisors (see below), whose sum is σ = 5556816270883. Its totient is φ = 5423348930872.

The previous prime is 5489681801959. The next prime is 5489681802083. The reversal of 5489681802049 is 9402081869845.

The square root of 5489681802049 is 2343007.

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., 111828041649 + 5377853760400 = 334407^2 + 2319020^2 .

It is not a de Polignac number, because 5489681802049 - 2²⁵ = 5489648247617 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5489681802149) 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 8 ways as a sum of consecutive naturals, for example, 194455467 + ... + 194483695.

Almost surely, 2^{5489681802049} is an apocalyptic number.

5489681802049 is the 2343007-th square number.

5489681802049 is the 1171504-th centered octagonal number.

It is an amenable number.

5489681802049 is a deficient number, since it is larger than the sum of its proper divisors (67134468834).

5489681802049 is an frugal number, since it uses more digits than its factorization.

5489681802049 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56624 (or 28312 counting only the distinct ones).

The product of its (nonzero) digits is 39813120, while the sum is 64.

Multiplying 5489681802049 by its sum of digits (64), we get a square (351339635331136 = 18744056²).

The spelling of 5489681802049 in words is "five trillion, four hundred eighty-nine billion, six hundred eighty-one million, eight hundred two thousand, forty-nine".