48636568369 has 3 divisors (see below), whose sum is σ = 48636788907. Its totient is φ = 48636347832.

The previous prime is 48636568349. The next prime is 48636568469. The reversal of 48636568369 is 96386563684.

The square root of 48636568369 is 220537.

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

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in only one way, i.e., 48129778225 + 506790144 = 219385^2 + 22512^2 .

It is not a de Polignac number, because 48636568369 - 2⁷ = 48636568241 is a prime.

It is a super-2 number, since 2×48636568369² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 48636568369.

It is not an unprimeable number, because it can be changed into a prime (48636568349) 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 2 ways as a sum of consecutive naturals, for example, 110269 + ... + 330805.

It is an arithmetic number, because the mean of its divisors is an integer number (16212262969).

Almost surely, 2^48636568369 is an apocalyptic number.

48636568369 is the 220537-th square number.

48636568369 is the 110269-th centered octagonal number.

It is an amenable number.

48636568369 is a deficient number, since it is larger than the sum of its proper divisors (220538).

48636568369 is an frugal number, since it uses more digits than its factorization.

48636568369 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 441074 (or 220537 counting only the distinct ones).

The product of its digits is 134369280, while the sum is 64.

Multiplying 48636568369 by its sum of digits (64), we get a square (3112740375616 = 1764296²).

The spelling of 48636568369 in words is "forty-eight billion, six hundred thirty-six million, five hundred sixty-eight thousand, three hundred sixty-nine".