205035053689 has 2 divisors, whose sum is σ = 205035053690. Its totient is φ = 205035053688.

The previous prime is 205035053681. The next prime is 205035053701. The reversal of 205035053689 is 986350530502.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 180302144400 + 24732909289 = 424620^2 + 157267^2 .

It is a cyclic number.

It is not a de Polignac number, because 205035053689 - 2³ = 205035053681 is a prime.

It is a super-2 number, since 2×205035053689² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (205035053681) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 102517526844 + 102517526845.

It is an arithmetic number, because the mean of its divisors is an integer number (102517526845).

Almost surely, 2^205035053689 is an apocalyptic number.

It is an amenable number.

205035053689 is a deficient number, since it is larger than the sum of its proper divisors (1).

205035053689 is an equidigital number, since it uses as much as digits as its factorization.

205035053689 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 972000, while the sum is 46.

The spelling of 205035053689 in words is "two hundred five billion, thirty-five million, fifty-three thousand, six hundred eighty-nine".