16555968000 has 1280 divisors, whose sum is σ = 72925332480. Its totient is φ = 3649536000.

The previous prime is 16555967921. The next prime is 16555968017. The reversal of 16555968000 is 86955561.

It is a happy number.

16555968000 is a `hidden beast` number, since 1 + 6 + 55 + 596 + 8 + 0 + 0 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (1280).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 247103967 + ... + 247104033.

It is an arithmetic number, because the mean of its divisors is an integer number (56972916).

Almost surely, 2^16555968000 is an apocalyptic number.

16555968000 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 16555968000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36462666240).

16555968000 is an abundant number, since it is smaller than the sum of its proper divisors (56369364480).

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

16555968000 is a wasteful number, since it uses less digits than its factorization.

16555968000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 133 (or 101 counting only the distinct ones).

The product of its (nonzero) digits is 324000, while the sum is 45.

The spelling of 16555968000 in words is "sixteen billion, five hundred fifty-five million, nine hundred sixty-eight thousand".