16381686826 has 8 divisors (see below), whose sum is σ = 24573114720. Its totient is φ = 8190648588.

The previous prime is 16381686821. The next prime is 16381686847. The reversal of 16381686826 is 62868618361.

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

It is not an unprimeable number, because it can be changed into a prime (16381686821) 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, 56035 + ... + 189481.

It is an arithmetic number, because the mean of its divisors is an integer number (3071639340).

Almost surely, 2^16381686826 is an apocalyptic number.

16381686826 is a deficient number, since it is larger than the sum of its proper divisors (8191427894).

16381686826 is a wasteful number, since it uses less digits than its factorization.

16381686826 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 194828.

The product of its digits is 3981312, while the sum is 55.

The spelling of 16381686826 in words is "sixteen billion, three hundred eighty-one million, six hundred eighty-six thousand, eight hundred twenty-six".