16610643630 has 96 divisors (see below), whose sum is σ = 49500232704. Its totient is φ = 3785727168.

The previous prime is 16610643601. The next prime is 16610643641. The reversal of 16610643630 is 3634601661.

16610643630 is a `hidden beast` number, since 1 + 6 + 6 + 1 + 0 + 643 + 6 + 3 + 0 = 666.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

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 47 ways as a sum of consecutive naturals, for example, 180619 + ... + 256601.

It is an arithmetic number, because the mean of its divisors is an integer number (515627424).

Almost surely, 2^16610643630 is an apocalyptic number.

16610643630 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 16610643630, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24750116352).

16610643630 is an abundant number, since it is smaller than the sum of its proper divisors (32889589074).

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

16610643630 is a wasteful number, since it uses less digits than its factorization.

16610643630 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76350 (or 76347 counting only the distinct ones).

The product of its (nonzero) digits is 46656, while the sum is 36.

The spelling of 16610643630 in words is "sixteen billion, six hundred ten million, six hundred forty-three thousand, six hundred thirty".