16636636660028 has 96 divisors (see below), whose sum is σ = 38443326340608. Its totient is φ = 6098932224000.

The previous prime is 16636636660027. The next prime is 16636636660073. The reversal of 16636636660028 is 82006663663661.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16636636660027) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 19751300 + ... + 20576372.

It is an arithmetic number, because the mean of its divisors is an integer number (400451316048).

Almost surely, 2^{16636636660028} 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 16636636660028, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19221663170304).

16636636660028 is an abundant number, since it is smaller than the sum of its proper divisors (21806689680580).

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

16636636660028 is a wasteful number, since it uses less digits than its factorization.

16636636660028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 828963 (or 828961 counting only the distinct ones).

The product of its (nonzero) digits is 40310784, while the sum is 59.

The spelling of 16636636660028 in words is "sixteen trillion, six hundred thirty-six billion, six hundred thirty-six million, six hundred sixty thousand, twenty-eight".