16643714438 has 8 divisors (see below), whose sum is σ = 26886000288. Its totient is φ = 7681714344.

The previous prime is 16643714429. The next prime is 16643714441. The reversal of 16643714438 is 83441734661.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 16643714392 and 16643714401.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 320071406 + ... + 320071457.

It is an arithmetic number, because the mean of its divisors is an integer number (3360750036).

Almost surely, 2^16643714438 is an apocalyptic number.

16643714438 is a deficient number, since it is larger than the sum of its proper divisors (10242285850).

16643714438 is a wasteful number, since it uses less digits than its factorization.

16643714438 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 640142878.

The product of its digits is 1161216, while the sum is 47.

The spelling of 16643714438 in words is "sixteen billion, six hundred forty-three million, seven hundred fourteen thousand, four hundred thirty-eight".