550636718401 has 81 divisors (see below), whose sum is σ = 737763914433. Its totient is φ = 409432956240.

The previous prime is 550636718381. The next prime is 550636718419. The reversal of 550636718401 is 104817636055.

It is a happy number.

The square root of 550636718401 is 742049.

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

It is not a de Polignac number, because 550636718401 - 2¹¹ = 550636716353 is a prime.

It is not an unprimeable number, because it can be changed into a prime (550636718201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 80 ways as a sum of consecutive naturals, for example, 1314168570 + ... + 1314168988.

Almost surely, 2^550636718401 is an apocalyptic number.

550636718401 is the 742049-th square number.

550636718401 is the 371025-th centered octagonal number.

It is an amenable number.

550636718401 is a deficient number, since it is larger than the sum of its proper divisors (187127196032).

550636718401 is an equidigital number, since it uses as much as digits as its factorization.

550636718401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 920 (or 460 counting only the distinct ones).

The product of its (nonzero) digits is 604800, while the sum is 46.

The spelling of 550636718401 in words is "five hundred fifty billion, six hundred thirty-six million, seven hundred eighteen thousand, four hundred one".