16660054656 has 384 divisors, whose sum is σ = 56595801600. Its totient is φ = 4605640704.

The previous prime is 16660054637. The next prime is 16660054679. The reversal of 16660054656 is 65645006661.

It is a tau number, because it is divible by the number of its divisors (384).

It is a super-2 number, since 2×16660054656² (a number of 21 digits) contains 22 as substring.

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, 42827710 + ... + 42828098.

It is an arithmetic number, because the mean of its divisors is an integer number (147384900).

Almost surely, 2^16660054656 is an apocalyptic number.

16660054656 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 16660054656, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28297900800).

16660054656 is an abundant number, since it is smaller than the sum of its proper divisors (39935746944).

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

16660054656 is a wasteful number, since it uses less digits than its factorization.

16660054656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 576 (or 561 counting only the distinct ones).

The product of its (nonzero) digits is 777600, while the sum is 45.

The spelling of 16660054656 in words is "sixteen billion, six hundred sixty million, fifty-four thousand, six hundred fifty-six".