20356633640532 has 48 divisors (see below), whose sum is σ = 55392200393600. Its totient is φ = 5816181038976.

The previous prime is 20356633640531. The next prime is 20356633640537. The reversal of 20356633640532 is 23504633665302.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20356633640531) 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 15 ways as a sum of consecutive naturals, for example, 2472861973 + ... + 2472870204.

Almost surely, 2^{20356633640532} is an apocalyptic number.

It is an amenable number.

20356633640532 is an abundant number, since it is smaller than the sum of its proper divisors (35035566753068).

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

20356633640532 is a wasteful number, since it uses less digits than its factorization.

20356633640532 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4945732205 (or 4945732189 counting only the distinct ones).

The product of its (nonzero) digits is 6998400, while the sum is 48.

The spelling of 20356633640532 in words is "twenty trillion, three hundred fifty-six billion, six hundred thirty-three million, six hundred forty thousand, five hundred thirty-two".