205428215968627 has 2 divisors, whose sum is σ = 205428215968628. Its totient is φ = 205428215968626.

The previous prime is 205428215968603. The next prime is 205428215968639. The reversal of 205428215968627 is 726869512824502.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 205428215968627 - 2¹¹ = 205428215966579 is a prime.

It is not a weakly prime, because it can be changed into another prime (205428215963627) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 102714107984313 + 102714107984314.

It is an arithmetic number, because the mean of its divisors is an integer number (102714107984314).

Almost surely, 2^{205428215968627} is an apocalyptic number.

205428215968627 is a deficient number, since it is larger than the sum of its proper divisors (1).

205428215968627 is an equidigital number, since it uses as much as digits as its factorization.

205428215968627 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 232243200, while the sum is 67.

The spelling of 205428215968627 in words is "two hundred five trillion, four hundred twenty-eight billion, two hundred fifteen million, nine hundred sixty-eight thousand, six hundred twenty-seven".