655170442813 has 2 divisors, whose sum is σ = 655170442814. Its totient is φ = 655170442812.

The previous prime is 655170442793. The next prime is 655170442831. The reversal of 655170442813 is 318244071556.

655170442813 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

Together with next prime (655170442831) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 328875869529 + 326294573284 = 573477^2 + 571222^2 .

It is a cyclic number.

It is not a de Polignac number, because 655170442813 - 2⁵ = 655170442781 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (655170742813) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 327585221406 + 327585221407.

It is an arithmetic number, because the mean of its divisors is an integer number (327585221407).

Almost surely, 2^655170442813 is an apocalyptic number.

It is an amenable number.

655170442813 is a deficient number, since it is larger than the sum of its proper divisors (1).

655170442813 is an equidigital number, since it uses as much as digits as its factorization.

655170442813 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 806400, while the sum is 46.

The spelling of 655170442813 in words is "six hundred fifty-five billion, one hundred seventy million, four hundred forty-two thousand, eight hundred thirteen".