16466166256 has 80 divisors (see below), whose sum is σ = 33815335680. Its totient is φ = 7751744000.

The previous prime is 16466166253. The next prime is 16466166263. The reversal of 16466166256 is 65266166461.

It is a happy number.

It is a super-2 number, since 2×16466166256² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16466166253) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 8219751 + ... + 8221753.

It is an arithmetic number, because the mean of its divisors is an integer number (422691696).

Almost surely, 2^16466166256 is an apocalyptic number.

16466166256 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 16466166256, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16907667840).

16466166256 is an abundant number, since it is smaller than the sum of its proper divisors (17349169424).

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

16466166256 is a wasteful number, since it uses less digits than its factorization.

16466166256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2374 (or 2368 counting only the distinct ones).

The product of its digits is 1866240, while the sum is 49.

The spelling of 16466166256 in words is "sixteen billion, four hundred sixty-six million, one hundred sixty-six thousand, two hundred fifty-six".