16555272274044 has 192 divisors, whose sum is σ = 51944442117120. Its totient is φ = 4451295098880.

The previous prime is 16555272274001. The next prime is 16555272274213. The reversal of 16555272274044 is 44047227255561.

16555272274044 is a `hidden beast` number, since 1 + 6 + 5 + 5 + 5 + 2 + 7 + 227 + 404 + 4 = 666.

16555272274044 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×16555272274044² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 111494019 + ... + 111642405.

It is an arithmetic number, because the mean of its divisors is an integer number (270543969360).

Almost surely, 2^{16555272274044} is an apocalyptic number.

16555272274044 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 16555272274044, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25972221058560).

16555272274044 is an abundant number, since it is smaller than the sum of its proper divisors (35389169843076).

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

16555272274044 is a wasteful number, since it uses less digits than its factorization.

16555272274044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 157105 (or 157097 counting only the distinct ones).

The product of its (nonzero) digits is 18816000, while the sum is 54.

The spelling of 16555272274044 in words is "sixteen trillion, five hundred fifty-five billion, two hundred seventy-two million, two hundred seventy-four thousand, forty-four".