16401768912 has 120 divisors (see below), whose sum is σ = 49218099840. Its totient is φ = 5080458240.

The previous prime is 16401768899. The next prime is 16401768913. The reversal of 16401768912 is 21986710461.

16401768912 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16401768913) by changing a digit.

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 in 23 ways as a sum of consecutive naturals, for example, 150987 + ... + 235797.

It is an arithmetic number, because the mean of its divisors is an integer number (410150832).

Almost surely, 2^16401768912 is an apocalyptic number.

16401768912 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 16401768912, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24609049920).

16401768912 is an abundant number, since it is smaller than the sum of its proper divisors (32816330928).

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

16401768912 is a wasteful number, since it uses less digits than its factorization.

16401768912 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84921 (or 84912 counting only the distinct ones).

The product of its (nonzero) digits is 145152, while the sum is 45.

The spelling of 16401768912 in words is "sixteen billion, four hundred one million, seven hundred sixty-eight thousand, nine hundred twelve".