16913802443 has 4 divisors (see below), whose sum is σ = 17497037040. Its totient is φ = 16330567848.

The previous prime is 16913802421. The next prime is 16913802509. The reversal of 16913802443 is 34420831961.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 34420831961 = 8543 ⋅4029127.

It is a cyclic number.

It is not a de Polignac number, because 16913802443 - 2¹⁸ = 16913540299 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 16913802443.

It is not an unprimeable number, because it can be changed into a prime (16913802343) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 291617255 + ... + 291617312.

It is an arithmetic number, because the mean of its divisors is an integer number (4374259260).

Almost surely, 2^16913802443 is an apocalyptic number.

16913802443 is a deficient number, since it is larger than the sum of its proper divisors (583234597).

16913802443 is an equidigital number, since it uses as much as digits as its factorization.

16913802443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 583234596.

The product of its (nonzero) digits is 124416, while the sum is 41.

The spelling of 16913802443 in words is "sixteen billion, nine hundred thirteen million, eight hundred two thousand, four hundred forty-three".