5261616369 has 9 divisors (see below), whose sum is σ = 7600426873. Its totient is φ = 3507599172.

The previous prime is 5261616361. The next prime is 5261616431. The reversal of 5261616369 is 9636161625.

The square root of 5261616369 is 72537.

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

5261616369 is a `hidden beast` number, since 5 + 2 + 6 + 1 + 6 + 1 + 636 + 9 = 666.

5261616369 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (9).

It is not a de Polignac number, because 5261616369 - 2³ = 5261616361 is a prime.

It is a super-2 number, since 2×5261616369² = 55369213629057488322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5261616361) 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, 205522 + ... + 229700.

Almost surely, 2^5261616369 is an apocalyptic number.

5261616369 is the 72537-th square number.

5261616369 is the 36269-th centered octagonal number.

It is an amenable number.

5261616369 is a deficient number, since it is larger than the sum of its proper divisors (2338810504).

5261616369 is an frugal number, since it uses more digits than its factorization.

5261616369 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48364 (or 24182 counting only the distinct ones).

The product of its digits is 349920, while the sum is 45.

The cubic root of 5261616369 is about 1739.2942450920.

The spelling of 5261616369 in words is "five billion, two hundred sixty-one million, six hundred sixteen thousand, three hundred sixty-nine".