16411878818 has 4 divisors (see below), whose sum is σ = 24617818230. Its totient is φ = 8205939408.

The previous prime is 16411878739. The next prime is 16411878859. The reversal of 16411878818 is 81887811461.

16411878818 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 12151314289 + 4260564529 = 110233^2 + 65273^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 16411878818.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4102969703 + ... + 4102969706.

Almost surely, 2^16411878818 is an apocalyptic number.

16411878818 is a deficient number, since it is larger than the sum of its proper divisors (8205939412).

16411878818 is an equidigital number, since it uses as much as digits as its factorization.

16411878818 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8205939411.

The product of its digits is 688128, while the sum is 53.

The spelling of 16411878818 in words is "sixteen billion, four hundred eleven million, eight hundred seventy-eight thousand, eight hundred eighteen".