205234350437 has 2 divisors, whose sum is σ = 205234350438. Its totient is φ = 205234350436.

The previous prime is 205234350407. The next prime is 205234350457. The reversal of 205234350437 is 734053432502.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 204092518756 + 1141831681 = 451766^2 + 33791^2 .

It is a cyclic number.

It is not a de Polignac number, because 205234350437 - 2²⁴ = 205217573221 is a prime.

It is a super-2 number, since 2×205234350437² (a number of 23 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 205234350437.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (205234350407) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 102617175218 + 102617175219.

It is an arithmetic number, because the mean of its divisors is an integer number (102617175219).

Almost surely, 2^205234350437 is an apocalyptic number.

It is an amenable number.

205234350437 is a deficient number, since it is larger than the sum of its proper divisors (1).

205234350437 is an equidigital number, since it uses as much as digits as its factorization.

205234350437 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 302400, while the sum is 38.

Adding to 205234350437 its reverse (734053432502), we get a palindrome (939287782939).

The spelling of 205234350437 in words is "two hundred five billion, two hundred thirty-four million, three hundred fifty thousand, four hundred thirty-seven".