16781402112 has 112 divisors (see below), whose sum is σ = 46193244672. Its totient is φ = 5413109760.

The previous prime is 16781402093. The next prime is 16781402173. The reversal of 16781402112 is 21120418761.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 750843 + ... + 772869.

Almost surely, 2^16781402112 is an apocalyptic number.

16781402112 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 16781402112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23096622336).

16781402112 is an abundant number, since it is smaller than the sum of its proper divisors (29411842560).

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

16781402112 is an equidigital number, since it uses as much as digits as its factorization.

16781402112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22087 (or 22063 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 33.

The spelling of 16781402112 in words is "sixteen billion, seven hundred eighty-one million, four hundred two thousand, one hundred twelve".