223578623857 has 2 divisors, whose sum is σ = 223578623858. Its totient is φ = 223578623856.

The previous prime is 223578623819. The next prime is 223578623881. The reversal of 223578623857 is 758326875322.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 201025792881 + 22552830976 = 448359^2 + 150176^2 .

It is a cyclic number.

It is not a de Polignac number, because 223578623857 - 2²³ = 223570235249 is a prime.

It is not a weakly prime, because it can be changed into another prime (223578623897) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111789311928 + 111789311929.

It is an arithmetic number, because the mean of its divisors is an integer number (111789311929).

Almost surely, 2^223578623857 is an apocalyptic number.

It is an amenable number.

223578623857 is a deficient number, since it is larger than the sum of its proper divisors (1).

223578623857 is an equidigital number, since it uses as much as digits as its factorization.

223578623857 is an evil number, because the sum of its binary digits is even.

The product of its digits is 33868800, while the sum is 58.

The spelling of 223578623857 in words is "two hundred twenty-three billion, five hundred seventy-eight million, six hundred twenty-three thousand, eight hundred fifty-seven".