16166812086 has 64 divisors (see below), whose sum is σ = 36549273600. Its totient is φ = 5296218048.

The previous prime is 16166812061. The next prime is 16166812111. The reversal of 16166812086 is 68021866161.

16166812086 is a `hidden beast` number, since 1 + 616 + 6 + 8 + 1 + 20 + 8 + 6 = 666.

It is an interprime number because it is at equal distance from previous prime (16166812061) and next prime (16166812111).

It is a super-2 number, since 2×16166812086² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 792531 + ... + 812673.

It is an arithmetic number, because the mean of its divisors is an integer number (571082400).

Almost surely, 2^16166812086 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 16166812086, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18274636800).

16166812086 is an abundant number, since it is smaller than the sum of its proper divisors (20382461514).

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

16166812086 is a wasteful number, since it uses less digits than its factorization.

16166812086 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20410 (or 20404 counting only the distinct ones).

The product of its (nonzero) digits is 165888, while the sum is 45.

The spelling of 16166812086 in words is "sixteen billion, one hundred sixty-six million, eight hundred twelve thousand, eighty-six".