16555528887600 has 240 divisors, whose sum is σ = 54031964438304. Its totient is φ = 4332410880000.

The previous prime is 16555528887593. The next prime is 16555528887643. The reversal of 16555528887600 is 678882555561.

It is a tau number, because it is divible by the number of its divisors (240).

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 13091190 + ... + 14300010.

Almost surely, 2^{16555528887600} is an apocalyptic number.

16555528887600 is a gapful number since it is divisible by the number (10) 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 16555528887600, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27015982219152).

16555528887600 is an abundant number, since it is smaller than the sum of its proper divisors (37476435550704).

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

16555528887600 is a wasteful number, since it uses less digits than its factorization.

16555528887600 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1209056 (or 1209045 counting only the distinct ones).

The product of its (nonzero) digits is 161280000, while the sum is 66.

The spelling of 16555528887600 in words is "sixteen trillion, five hundred fifty-five billion, five hundred twenty-eight million, eight hundred eighty-seven thousand, six hundred".