20016235507633 has 8 divisors (see below), whose sum is σ = 20057225043456. Its totient is φ = 19975246880400.

The previous prime is 20016235507571. The next prime is 20016235507661. The reversal of 20016235507633 is 33670553261002.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20016235507633 - 2²⁵ = 20016201953201 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20016235507633.

It is not an unprimeable number, because it can be changed into a prime (20016235507663) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 60410928 + ... + 60741358.

It is an arithmetic number, because the mean of its divisors is an integer number (2507153130432).

Almost surely, 2^{20016235507633} is an apocalyptic number.

It is an amenable number.

20016235507633 is a deficient number, since it is larger than the sum of its proper divisors (40989535823).

20016235507633 is a wasteful number, since it uses less digits than its factorization.

20016235507633 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 454295.

The product of its (nonzero) digits is 680400, while the sum is 43.

Adding to 20016235507633 its reverse (33670553261002), we get a palindrome (53686788768635).

The spelling of 20016235507633 in words is "twenty trillion, sixteen billion, two hundred thirty-five million, five hundred seven thousand, six hundred thirty-three".