16801128398544 has 320 divisors, whose sum is σ = 52971331141632. Its totient is φ = 4486913740800.

The previous prime is 16801128398533. The next prime is 16801128398563. The reversal of 16801128398544 is 44589382110861.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 52639599 + ... + 52957809.

Almost surely, 2^{16801128398544} is an apocalyptic number.

16801128398544 is a gapful number since it is divisible by the number (14) 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 16801128398544, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26485665570816).

16801128398544 is an abundant number, since it is smaller than the sum of its proper divisors (36170202743088).

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

16801128398544 is a wasteful number, since it uses less digits than its factorization.

16801128398544 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 318434 (or 318428 counting only the distinct ones).

The product of its (nonzero) digits is 13271040, while the sum is 60.

The spelling of 16801128398544 in words is "sixteen trillion, eight hundred one billion, one hundred twenty-eight million, three hundred ninety-eight thousand, five hundred forty-four".