438509472263 has 4 divisors (see below), whose sum is σ = 464304147120. Its totient is φ = 412714797408.

The previous prime is 438509472211. The next prime is 438509472277. The reversal of 438509472263 is 362274905834.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 438509472263 - 2⁸ = 438509472007 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (438509472293) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12897337403 + ... + 12897337436.

It is an arithmetic number, because the mean of its divisors is an integer number (116076036780).

Almost surely, 2^438509472263 is an apocalyptic number.

438509472263 is a deficient number, since it is larger than the sum of its proper divisors (25794674857).

438509472263 is a wasteful number, since it uses less digits than its factorization.

438509472263 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25794674856.

The product of its (nonzero) digits is 8709120, while the sum is 53.

The spelling of 438509472263 in words is "four hundred thirty-eight billion, five hundred nine million, four hundred seventy-two thousand, two hundred sixty-three".