16661752156 has 192 divisors, whose sum is σ = 38954926080. Its totient is φ = 6062791680.

The previous prime is 16661752127. The next prime is 16661752183. The reversal of 16661752156 is 65125716661.

16661752156 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×16661752156² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 18783945 + ... + 18784831.

It is an arithmetic number, because the mean of its divisors is an integer number (202890240).

Almost surely, 2^16661752156 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 16661752156, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19477463040).

16661752156 is an abundant number, since it is smaller than the sum of its proper divisors (22293173924).

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

16661752156 is a wasteful number, since it uses less digits than its factorization.

16661752156 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1032 (or 1030 counting only the distinct ones).

The product of its digits is 453600, while the sum is 46.

The spelling of 16661752156 in words is "sixteen billion, six hundred sixty-one million, seven hundred fifty-two thousand, one hundred fifty-six".