205940793229 has 2 divisors, whose sum is σ = 205940793230. Its totient is φ = 205940793228.

The previous prime is 205940793211. The next prime is 205940793269. The reversal of 205940793229 is 922397049502.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 168653955625 + 37286837604 = 410675^2 + 193098^2 .

It is a cyclic number.

It is not a de Polignac number, because 205940793229 - 2³⁵ = 171581054861 is a prime.

It is a super-2 number, since 2×205940793229² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (205940793209) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 102970396614 + 102970396615.

It is an arithmetic number, because the mean of its divisors is an integer number (102970396615).

Almost surely, 2^205940793229 is an apocalyptic number.

It is an amenable number.

205940793229 is a deficient number, since it is larger than the sum of its proper divisors (1).

205940793229 is an equidigital number, since it uses as much as digits as its factorization.

205940793229 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2449440, while the sum is 52.

The spelling of 205940793229 in words is "two hundred five billion, nine hundred forty million, seven hundred ninety-three thousand, two hundred twenty-nine".