205623282049 has 2 divisors, whose sum is σ = 205623282050. Its totient is φ = 205623282048.

The previous prime is 205623282017. The next prime is 205623282079. The reversal of 205623282049 is 940282326502.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 167307177024 + 38316105025 = 409032^2 + 195745^2 .

It is a cyclic number.

It is not a de Polignac number, because 205623282049 - 2⁵ = 205623282017 is a prime.

It is a super-3 number, since 3×205623282049³ (a number of 35 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 205623281996 and 205623282014.

It is not a weakly prime, because it can be changed into another prime (205623282079) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 102811641024 + 102811641025.

It is an arithmetic number, because the mean of its divisors is an integer number (102811641025).

Almost surely, 2^205623282049 is an apocalyptic number.

It is an amenable number.

205623282049 is a deficient number, since it is larger than the sum of its proper divisors (1).

205623282049 is an equidigital number, since it uses as much as digits as its factorization.

205623282049 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 414720, while the sum is 43.

The spelling of 205623282049 in words is "two hundred five billion, six hundred twenty-three million, two hundred eighty-two thousand, forty-nine".