205354553039 has 2 divisors, whose sum is σ = 205354553040. Its totient is φ = 205354553038.

The previous prime is 205354552981. The next prime is 205354553167. The reversal of 205354553039 is 930355453502.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 205354553039 - 2²⁰ = 205353504463 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (205354523039) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 102677276519 + 102677276520.

It is an arithmetic number, because the mean of its divisors is an integer number (102677276520).

Almost surely, 2^205354553039 is an apocalyptic number.

205354553039 is a deficient number, since it is larger than the sum of its proper divisors (1).

205354553039 is an equidigital number, since it uses as much as digits as its factorization.

205354553039 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1215000, while the sum is 44.

The spelling of 205354553039 in words is "two hundred five billion, three hundred fifty-four million, five hundred fifty-three thousand, thirty-nine".