223387906657 has 2 divisors, whose sum is σ = 223387906658. Its totient is φ = 223387906656.

The previous prime is 223387906619. The next prime is 223387906661. The reversal of 223387906657 is 756609783322.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 213888675361 + 9499231296 = 462481^2 + 97464^2 .

It is a cyclic number.

It is not a de Polignac number, because 223387906657 - 2⁷ = 223387906529 is a prime.

It is not a weakly prime, because it can be changed into another prime (223387406657) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111693953328 + 111693953329.

It is an arithmetic number, because the mean of its divisors is an integer number (111693953329).

Almost surely, 2^223387906657 is an apocalyptic number.

It is an amenable number.

223387906657 is a deficient number, since it is larger than the sum of its proper divisors (1).

223387906657 is an equidigital number, since it uses as much as digits as its factorization.

223387906657 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 22861440, while the sum is 58.

The spelling of 223387906657 in words is "two hundred twenty-three billion, three hundred eighty-seven million, nine hundred six thousand, six hundred fifty-seven".