233568840628657 has 2 divisors, whose sum is σ = 233568840628658. Its totient is φ = 233568840628656.

The previous prime is 233568840628621. The next prime is 233568840628703. The reversal of 233568840628657 is 756826048865332.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 136187943061681 + 97380897566976 = 11669959^2 + 9868176^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-233568840628657 is a prime.

It is a super-2 number, since 2×233568840628657² (a number of 30 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 233568840628657.

It is not a weakly prime, because it can be changed into another prime (233568840608657) 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, 116784420314328 + 116784420314329.

It is an arithmetic number, because the mean of its divisors is an integer number (116784420314329).

Almost surely, 2^{233568840628657} is an apocalyptic number.

It is an amenable number.

233568840628657 is a deficient number, since it is larger than the sum of its proper divisors (1).

233568840628657 is an equidigital number, since it uses as much as digits as its factorization.

233568840628657 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2786918400, while the sum is 73.

The spelling of 233568840628657 in words is "two hundred thirty-three trillion, five hundred sixty-eight billion, eight hundred forty million, six hundred twenty-eight thousand, six hundred fifty-seven".