16432315555220 has 48 divisors (see below), whose sum is σ = 34882395517200. Its totient is φ = 6501787315200.

The previous prime is 16432315555219. The next prime is 16432315555247. The reversal of 16432315555220 is 2255551323461.

It can be written as a sum of positive squares in 8 ways, for example, as 232543843984 + 16199771711236 = 482228^2 + 4024894^2 .

It is a congruent number.

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, 4960835 + ... + 7581194.

It is an arithmetic number, because the mean of its divisors is an integer number (726716573275).

Almost surely, 2^{16432315555220} is an apocalyptic number.

16432315555220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16432315555220 is an abundant number, since it is smaller than the sum of its proper divisors (18450079961980).

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

16432315555220 is a wasteful number, since it uses less digits than its factorization.

16432315555220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12542748 (or 12542746 counting only the distinct ones).

The product of its (nonzero) digits is 1080000, while the sum is 44.

Adding to 16432315555220 its reverse (2255551323461), we get a palindrome (18687866878681).

The spelling of 16432315555220 in words is "sixteen trillion, four hundred thirty-two billion, three hundred fifteen million, five hundred fifty-five thousand, two hundred twenty".