16355778496144 has 80 divisors (see below), whose sum is σ = 33598703473920. Its totient is φ = 7700391050240.

The previous prime is 16355778496049. The next prime is 16355778496159. The reversal of 16355778496144 is 44169487755361.

It is a super-2 number, since 2×16355778496144² (a number of 27 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4793547 + ... + 7462549.

It is an arithmetic number, because the mean of its divisors is an integer number (419983793424).

Almost surely, 2^{16355778496144} 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 16355778496144, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16799351736960).

16355778496144 is an abundant number, since it is smaller than the sum of its proper divisors (17242924977776).

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

16355778496144 is a wasteful number, since it uses less digits than its factorization.

16355778496144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2669368 (or 2669362 counting only the distinct ones).

The product of its digits is 609638400, while the sum is 70.

The spelling of 16355778496144 in words is "sixteen trillion, three hundred fifty-five billion, seven hundred seventy-eight million, four hundred ninety-six thousand, one hundred forty-four".