611114144548261 has 2 divisors, whose sum is σ = 611114144548262. Its totient is φ = 611114144548260.

The previous prime is 611114144548121. The next prime is 611114144548289. The reversal of 611114144548261 is 162845441411116.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 447296697372100 + 163817447176161 = 21149390^2 + 12799119^2 .

It is a cyclic number.

It is not a de Polignac number, because 611114144548261 - 2⁴⁹ = 48164191126949 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (611114144548561) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 305557072274130 + 305557072274131.

It is an arithmetic number, because the mean of its divisors is an integer number (305557072274131).

Almost surely, 2^{611114144548261} is an apocalyptic number.

It is an amenable number.

611114144548261 is a deficient number, since it is larger than the sum of its proper divisors (1).

611114144548261 is an equidigital number, since it uses as much as digits as its factorization.

611114144548261 is an evil number, because the sum of its binary digits is even.

The product of its digits is 737280, while the sum is 49.

Adding to 611114144548261 its reverse (162845441411116), we get a palindrome (773959585959377).

The spelling of 611114144548261 in words is "six hundred eleven trillion, one hundred fourteen billion, one hundred forty-four million, five hundred forty-eight thousand, two hundred sixty-one".