16555272321270 has 128 divisors (see below), whose sum is σ = 42627302922240. Its totient is φ = 4100054999040.

The previous prime is 16555272321241. The next prime is 16555272321307. The reversal of 16555272321270 is 7212327255561.

It is a happy number.

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, 69300430 + ... + 69538910.

It is an arithmetic number, because the mean of its divisors is an integer number (333025804080).

Almost surely, 2^{16555272321270} is an apocalyptic number.

16555272321270 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 16555272321270, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21313651461120).

16555272321270 is an abundant number, since it is smaller than the sum of its proper divisors (26072030600970).

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

16555272321270 is a wasteful number, since it uses less digits than its factorization.

16555272321270 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 240310.

The product of its (nonzero) digits is 1764000, while the sum is 48.

The spelling of 16555272321270 in words is "sixteen trillion, five hundred fifty-five billion, two hundred seventy-two million, three hundred twenty-one thousand, two hundred seventy".