655049041201 has 9 divisors (see below), whose sum is σ = 664205145771. Its totient is φ = 646017493392.

The previous prime is 655049041177. The next prime is 655049041211. The reversal of 655049041201 is 102140940556.

The square root of 655049041201 is 809351.

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

It can be written as a sum of positive squares in only one way, i.e., 371837746225 + 283211294976 = 609785^2 + 532176^2 .

It is not a de Polignac number, because 655049041201 - 2⁹ = 655049040689 is a prime.

It is not an unprimeable number, because it can be changed into a prime (655049041211) 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, 59077080 + ... + 59088166.

Almost surely, 2^655049041201 is an apocalyptic number.

655049041201 is the 809351-st square number.

655049041201 is the 404676-th centered octagonal number.

It is an amenable number.

655049041201 is a deficient number, since it is larger than the sum of its proper divisors (9156104570).

655049041201 is an frugal number, since it uses more digits than its factorization.

655049041201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22320 (or 11160 counting only the distinct ones).

The product of its (nonzero) digits is 43200, while the sum is 37.

Adding to 655049041201 its reverse (102140940556), we get a palindrome (757189981757).

The spelling of 655049041201 in words is "six hundred fifty-five billion, forty-nine million, forty-one thousand, two hundred one".