2001636036216 has 256 divisors, whose sum is σ = 6211826496000. Its totient is φ = 593491691520.

The previous prime is 2001636036077. The next prime is 2001636036221. The reversal of 2001636036216 is 6126306361002.

2001636036216 is a `hidden beast` number, since 2 + 0 + 0 + 1 + 636 + 0 + 3 + 6 + 2 + 16 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

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 63 ways as a sum of consecutive naturals, for example, 29338255 + ... + 29406401.

It is an arithmetic number, because the mean of its divisors is an integer number (24264947250).

Almost surely, 2^{2001636036216} 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 2001636036216, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3105913248000).

2001636036216 is an abundant number, since it is smaller than the sum of its proper divisors (4210190459784).

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

2001636036216 is a wasteful number, since it uses less digits than its factorization.

2001636036216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68619 (or 68609 counting only the distinct ones).

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

The spelling of 2001636036216 in words is "two trillion, one billion, six hundred thirty-six million, thirty-six thousand, two hundred sixteen".