16555220623004 has 12 divisors (see below), whose sum is σ = 33110441246064. Its totient is φ = 7095094552704.

The previous prime is 16555220622979. The next prime is 16555220623027. The reversal of 16555220623004 is 40032602255561.

16555220623004 is an admirable number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 295628939669 + ... + 295628939724.

It is an arithmetic number, because the mean of its divisors is an integer number (2759203437172).

Almost surely, 2^{16555220623004} is an apocalyptic number.

16555220623004 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

16555220623004 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

16555220623004 is a wasteful number, since it uses less digits than its factorization.

16555220623004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 591257879404 (or 591257879402 counting only the distinct ones).

The product of its (nonzero) digits is 432000, while the sum is 41.

Adding to 16555220623004 its reverse (40032602255561), we get a palindrome (56587822878565).

The spelling of 16555220623004 in words is "sixteen trillion, five hundred fifty-five billion, two hundred twenty million, six hundred twenty-three thousand, four".