20300584550689 has 3 divisors (see below), whose sum is σ = 20300589056307. Its totient is φ = 20300580045072.

The previous prime is 20300584550641. The next prime is 20300584550693. The reversal of 20300584550689 is 98605548500302.

The square root of 20300584550689 is 4505617.

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., 369645760225 + 19930938790464 = 607985^2 + 4464408^2 .

It is not a de Polignac number, because 20300584550689 - 2⁹ = 20300584550177 is a prime.

It is a super-2 number, since 2×20300584550689² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20300584550629) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 2252809 + ... + 6758425.

It is an arithmetic number, because the mean of its divisors is an integer number (6766863018769).

Almost surely, 2^{20300584550689} is an apocalyptic number.

20300584550689 is the 4505617-th square number.

20300584550689 is the 2252809-th centered octagonal number.

It is an amenable number.

20300584550689 is a deficient number, since it is larger than the sum of its proper divisors (4505618).

20300584550689 is an frugal number, since it uses more digits than its factorization.

20300584550689 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9011234 (or 4505617 counting only the distinct ones).

The product of its (nonzero) digits is 10368000, while the sum is 55.

The spelling of 20300584550689 in words is "twenty trillion, three hundred billion, five hundred eighty-four million, five hundred fifty thousand, six hundred eighty-nine".