200240200261 has 2 divisors, whose sum is σ = 200240200262. Its totient is φ = 200240200260.

The previous prime is 200240200201. The next prime is 200240200267. The reversal of 200240200261 is 162002042002.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 194926665025 + 5313535236 = 441505^2 + 72894^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-200240200261 is a prime.

It is a super-2 number, since 2×200240200261² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (200240200267) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100120100130 + 100120100131.

It is an arithmetic number, because the mean of its divisors is an integer number (100120100131).

Almost surely, 2^200240200261 is an apocalyptic number.

It is an amenable number.

200240200261 is a deficient number, since it is larger than the sum of its proper divisors (1).

200240200261 is an equidigital number, since it uses as much as digits as its factorization.

200240200261 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 384, while the sum is 19.

Adding to 200240200261 its reverse (162002042002), we get a palindrome (362242242263).

The spelling of 200240200261 in words is "two hundred billion, two hundred forty million, two hundred thousand, two hundred sixty-one".