16786364436 has 144 divisors (see below), whose sum is σ = 45041068800. Its totient is φ = 5260654080.

The previous prime is 16786364431. The next prime is 16786364449. The reversal of 16786364436 is 63446368761.

16786364436 is a `hidden beast` number, since 167 + 8 + 6 + 36 + 443 + 6 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16786364431) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 12706656 + ... + 12707976.

It is an arithmetic number, because the mean of its divisors is an integer number (312785200).

Almost surely, 2^16786364436 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 16786364436, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22520534400).

16786364436 is an abundant number, since it is smaller than the sum of its proper divisors (28254704364).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

16786364436 is a wasteful number, since it uses less digits than its factorization.

16786364436 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1606 (or 1601 counting only the distinct ones).

The product of its digits is 10450944, while the sum is 54.

The spelling of 16786364436 in words is "sixteen billion, seven hundred eighty-six million, three hundred sixty-four thousand, four hundred thirty-six".