591654897049 has 2 divisors, whose sum is σ = 591654897050. Its totient is φ = 591654897048.

The previous prime is 591654897047. The next prime is 591654897109. The reversal of 591654897049 is 940798456195.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 523405947024 + 68248950025 = 723468^2 + 261245^2 .

It is a cyclic number.

It is not a de Polignac number, because 591654897049 - 2¹ = 591654897047 is a prime.

Together with 591654897047, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (591654897047) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 295827448524 + 295827448525.

It is an arithmetic number, because the mean of its divisors is an integer number (295827448525).

Almost surely, 2^591654897049 is an apocalyptic number.

It is an amenable number.

591654897049 is a deficient number, since it is larger than the sum of its proper divisors (1).

591654897049 is an equidigital number, since it uses as much as digits as its factorization.

591654897049 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 97977600, while the sum is 67.

The spelling of 591654897049 in words is "five hundred ninety-one billion, six hundred fifty-four million, eight hundred ninety-seven thousand, forty-nine".