438558879133 has 2 divisors, whose sum is σ = 438558879134. Its totient is φ = 438558879132.

The previous prime is 438558879131. The next prime is 438558879181. The reversal of 438558879133 is 331978855834.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 420063423129 + 18495456004 = 648123^2 + 135998^2 .

It is a cyclic number.

It is not a de Polignac number, because 438558879133 - 2¹ = 438558879131 is a prime.

Together with 438558879131, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (438558879131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 219279439566 + 219279439567.

It is an arithmetic number, because the mean of its divisors is an integer number (219279439567).

Almost surely, 2^438558879133 is an apocalyptic number.

It is an amenable number.

438558879133 is a deficient number, since it is larger than the sum of its proper divisors (1).

438558879133 is an equidigital number, since it uses as much as digits as its factorization.

438558879133 is an evil number, because the sum of its binary digits is even.

The product of its digits is 87091200, while the sum is 64.

The spelling of 438558879133 in words is "four hundred thirty-eight billion, five hundred fifty-eight million, eight hundred seventy-nine thousand, one hundred thirty-three".