16338666794 has 4 divisors (see below), whose sum is σ = 24508000194. Its totient is φ = 8169333396.

The previous prime is 16338666733. The next prime is 16338666797. The reversal of 16338666794 is 49766683361.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 49766683361 = 1193 ⋅41715577.

It can be written as a sum of positive squares in only one way, i.e., 9301638025 + 7037028769 = 96445^2 + 83887^2 .

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (16338666797) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4084666697 + ... + 4084666700.

Almost surely, 2^16338666794 is an apocalyptic number.

16338666794 is a deficient number, since it is larger than the sum of its proper divisors (8169333400).

16338666794 is an equidigital number, since it uses as much as digits as its factorization.

16338666794 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8169333399.

The product of its digits is 23514624, while the sum is 59.

The spelling of 16338666794 in words is "sixteen billion, three hundred thirty-eight million, six hundred sixty-six thousand, seven hundred ninety-four".