438353688664475 has 6 divisors (see below), whose sum is σ = 543558573943980. Its totient is φ = 350682950931560.

The previous prime is 438353688664459. The next prime is 438353688664499. The reversal of 438353688664475 is 574466886353834.

It is not a de Polignac number, because 438353688664475 - 2⁴ = 438353688664459 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 438353688664475.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 8767073773265 + ... + 8767073773314.

It is an arithmetic number, because the mean of its divisors is an integer number (90593095657330).

Almost surely, 2^{438353688664475} is an apocalyptic number.

438353688664475 is a deficient number, since it is larger than the sum of its proper divisors (105204885279505).

438353688664475 is a wasteful number, since it uses less digits than its factorization.

438353688664475 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17534147546589 (or 17534147546584 counting only the distinct ones).

The product of its digits is 33443020800, while the sum is 80.

The spelling of 438353688664475 in words is "four hundred thirty-eight trillion, three hundred fifty-three billion, six hundred eighty-eight million, six hundred sixty-four thousand, four hundred seventy-five".