20533316522351 has 8 divisors (see below), whose sum is σ = 20627929278000. Its totient is φ = 20438921018880.

The previous prime is 20533316522293. The next prime is 20533316522363. The reversal of 20533316522351 is 15322561333502.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20533316522351 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20533316522299 and 20533316522308.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20533316522051) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 54123581 + ... + 54501638.

It is an arithmetic number, because the mean of its divisors is an integer number (2578491159750).

Almost surely, 2^{20533316522351} is an apocalyptic number.

20533316522351 is a deficient number, since it is larger than the sum of its proper divisors (94612755649).

20533316522351 is a wasteful number, since it uses less digits than its factorization.

20533316522351 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 108626089.

The product of its (nonzero) digits is 486000, while the sum is 41.

Adding to 20533316522351 its reverse (15322561333502), we get a palindrome (35855877855853).

The spelling of 20533316522351 in words is "twenty trillion, five hundred thirty-three billion, three hundred sixteen million, five hundred twenty-two thousand, three hundred fifty-one".