2355831310561 has 2 divisors, whose sum is σ = 2355831310562. Its totient is φ = 2355831310560.

The previous prime is 2355831310549. The next prime is 2355831310631. The reversal of 2355831310561 is 1650131385532.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1517084890000 + 838746420561 = 1231700^2 + 915831^2 .

It is a cyclic number.

It is not a de Polignac number, because 2355831310561 - 2⁵ = 2355831310529 is a prime.

It is not a weakly prime, because it can be changed into another prime (2355831310361) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1177915655280 + 1177915655281.

It is an arithmetic number, because the mean of its divisors is an integer number (1177915655281).

Almost surely, 2^{2355831310561} is an apocalyptic number.

It is an amenable number.

2355831310561 is a deficient number, since it is larger than the sum of its proper divisors (1).

2355831310561 is an equidigital number, since it uses as much as digits as its factorization.

2355831310561 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 324000, while the sum is 43.

The spelling of 2355831310561 in words is "two trillion, three hundred fifty-five billion, eight hundred thirty-one million, three hundred ten thousand, five hundred sixty-one".