16555220626736 has 160 divisors (see below), whose sum is σ = 37410125598720. Its totient is φ = 7022939212800.

The previous prime is 16555220626717. The next prime is 16555220626753. The reversal of 16555220626736 is 63762602255561.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 134903741 + ... + 135026403.

It is an arithmetic number, because the mean of its divisors is an integer number (233813284992).

Almost surely, 2^{16555220626736} is an apocalyptic number.

16555220626736 is a gapful number since it is divisible by the number (16) 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 16555220626736, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18705062799360).

16555220626736 is an abundant number, since it is smaller than the sum of its proper divisors (20854904971984).

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

16555220626736 is a wasteful number, since it uses less digits than its factorization.

16555220626736 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 123595 (or 123589 counting only the distinct ones).

The product of its (nonzero) digits is 27216000, while the sum is 56.

The spelling of 16555220626736 in words is "sixteen trillion, five hundred fifty-five billion, two hundred twenty million, six hundred twenty-six thousand, seven hundred thirty-six".