438052465861249 has 2 divisors, whose sum is σ = 438052465861250. Its totient is φ = 438052465861248.

The previous prime is 438052465861237. The next prime is 438052465861259. The reversal of 438052465861249 is 942168564250834.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 406041844230400 + 32010621630849 = 20150480^2 + 5657793^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-438052465861249 is a prime.

It is not a weakly prime, because it can be changed into another prime (438052465861259) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 219026232930624 + 219026232930625.

It is an arithmetic number, because the mean of its divisors is an integer number (219026232930625).

Almost surely, 2^{438052465861249} is an apocalyptic number.

It is an amenable number.

438052465861249 is a deficient number, since it is larger than the sum of its proper divisors (1).

438052465861249 is an equidigital number, since it uses as much as digits as its factorization.

438052465861249 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 398131200, while the sum is 67.

The spelling of 438052465861249 in words is "four hundred thirty-eight trillion, fifty-two billion, four hundred sixty-five million, eight hundred sixty-one thousand, two hundred forty-nine".