16266125808 has 200 divisors, whose sum is σ = 47978290800. Its totient is φ = 5319530496.

The previous prime is 16266125779. The next prime is 16266125819. The reversal of 16266125808 is 80852166261.

16266125808 is a `hidden beast` number, since 1 + 6 + 2 + 6 + 61 + 2 + 580 + 8 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 15962323 + ... + 15963341.

It is an arithmetic number, because the mean of its divisors is an integer number (239891454).

Almost surely, 2^16266125808 is an apocalyptic number.

16266125808 is a gapful number since it is divisible by the number (18) 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 16266125808, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23989145400).

16266125808 is an abundant number, since it is smaller than the sum of its proper divisors (31712164992).

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

16266125808 is a wasteful number, since it uses less digits than its factorization.

16266125808 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1261 (or 1246 counting only the distinct ones).

The product of its (nonzero) digits is 276480, while the sum is 45.

The spelling of 16266125808 in words is "sixteen billion, two hundred sixty-six million, one hundred twenty-five thousand, eight hundred eight".