611115620854577 has 2 divisors, whose sum is σ = 611115620854578. Its totient is φ = 611115620854576.

The previous prime is 611115620854537. The next prime is 611115620854619. The reversal of 611115620854577 is 775458026511116.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 479515352869921 + 131600267984656 = 21897839^2 + 11471716^2 .

It is a cyclic number.

It is not a de Polignac number, because 611115620854577 - 2⁶ = 611115620854513 is a prime.

It is not a weakly prime, because it can be changed into another prime (611115620854537) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 305557810427288 + 305557810427289.

It is an arithmetic number, because the mean of its divisors is an integer number (305557810427289).

Almost surely, 2^{611115620854577} is an apocalyptic number.

It is an amenable number.

611115620854577 is a deficient number, since it is larger than the sum of its proper divisors (1).

611115620854577 is an equidigital number, since it uses as much as digits as its factorization.

611115620854577 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 14112000, while the sum is 59.

The spelling of 611115620854577 in words is "six hundred eleven trillion, one hundred fifteen billion, six hundred twenty million, eight hundred fifty-four thousand, five hundred seventy-seven".