200715648169 has 3 divisors (see below), whose sum is σ = 200716096183. Its totient is φ = 200715200156.

The previous prime is 200715648149. The next prime is 200715648241. The reversal of 200715648169 is 961846517002.

It is a happy number.

The square root of 200715648169 is 448013.

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., 34568105625 + 166147542544 = 185925^2 + 407612^2 .

It is not a de Polignac number, because 200715648169 - 2¹³ = 200715639977 is a prime.

It is a super-2 number, since 2×200715648169² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (200715648109) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 224007 + ... + 672019.

Almost surely, 2^200715648169 is an apocalyptic number.

200715648169 is the 448013-rd square number.

200715648169 is the 224007-th centered octagonal number.

It is an amenable number.

200715648169 is a deficient number, since it is larger than the sum of its proper divisors (448014).

200715648169 is an frugal number, since it uses more digits than its factorization.

200715648169 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 896026 (or 448013 counting only the distinct ones).

The product of its (nonzero) digits is 725760, while the sum is 49.

Multiplying 200715648169 by its sum of digits (49), we get a square (9835066760281 = 3136091²).

The spelling of 200715648169 in words is "two hundred billion, seven hundred fifteen million, six hundred forty-eight thousand, one hundred sixty-nine".