611563616413 has 2 divisors, whose sum is σ = 611563616414. Its totient is φ = 611563616412.

The previous prime is 611563616387. The next prime is 611563616423. The reversal of 611563616413 is 314616365116.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 526231274724 + 85332341689 = 725418^2 + 292117^2 .

It is a cyclic number.

It is not a de Polignac number, because 611563616413 - 2¹⁷ = 611563485341 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 611563616413.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (611563616423) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 305781808206 + 305781808207.

It is an arithmetic number, because the mean of its divisors is an integer number (305781808207).

Almost surely, 2^611563616413 is an apocalyptic number.

It is an amenable number.

611563616413 is a deficient number, since it is larger than the sum of its proper divisors (1).

611563616413 is an equidigital number, since it uses as much as digits as its factorization.

611563616413 is an evil number, because the sum of its binary digits is even.

The product of its digits is 233280, while the sum is 43.

The spelling of 611563616413 in words is "six hundred eleven billion, five hundred sixty-three million, six hundred sixteen thousand, four hundred thirteen".