611278484222657 has 2 divisors, whose sum is σ = 611278484222658. Its totient is φ = 611278484222656.

The previous prime is 611278484222561. The next prime is 611278484222671. The reversal of 611278484222657 is 756222484872116.

611278484222657 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 387360300723841 + 223918183498816 = 19681471^2 + 14963896^2 .

It is a cyclic number.

It is not a de Polignac number, because 611278484222657 - 2²⁴ = 611278467445441 is a prime.

It is a super-2 number, since 2×611278484222657² (a number of 30 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 611278484222593 and 611278484222602.

It is not a weakly prime, because it can be changed into another prime (611278484222257) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 305639242111328 + 305639242111329.

It is an arithmetic number, because the mean of its divisors is an integer number (305639242111329).

Almost surely, 2^{611278484222657} is an apocalyptic number.

It is an amenable number.

611278484222657 is a deficient number, since it is larger than the sum of its proper divisors (1).

611278484222657 is an equidigital number, since it uses as much as digits as its factorization.

611278484222657 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 144506880, while the sum is 65.

The spelling of 611278484222657 in words is "six hundred eleven trillion, two hundred seventy-eight billion, four hundred eighty-four million, two hundred twenty-two thousand, six hundred fifty-seven".