205350404202539 has 2 divisors, whose sum is σ = 205350404202540. Its totient is φ = 205350404202538.

The previous prime is 205350404202431. The next prime is 205350404202563. The reversal of 205350404202539 is 935202404053502.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-205350404202539 is a prime.

It is a super-2 number, since 2×205350404202539² (a number of 29 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 205350404202539.

It is not a weakly prime, because it can be changed into another prime (205350404202569) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 102675202101269 + 102675202101270.

It is an arithmetic number, because the mean of its divisors is an integer number (102675202101270).

Almost surely, 2^{205350404202539} is an apocalyptic number.

205350404202539 is a deficient number, since it is larger than the sum of its proper divisors (1).

205350404202539 is an equidigital number, since it uses as much as digits as its factorization.

205350404202539 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1296000, while the sum is 44.

The spelling of 205350404202539 in words is "two hundred five trillion, three hundred fifty billion, four hundred four million, two hundred two thousand, five hundred thirty-nine".