20323102153056 has 96 divisors (see below), whose sum is σ = 56179128579840. Its totient is φ = 6415171628544.

The previous prime is 20323102153049. The next prime is 20323102153073. The reversal of 20323102153056 is 65035120132302.

It is a tau number, because it is divible by the number of its divisors (96).

It is a super-2 number, since 2×20323102153056² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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, 2120326 + ... + 6718778.

It is an arithmetic number, because the mean of its divisors is an integer number (585199256040).

Almost surely, 2^{20323102153056} 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 20323102153056, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28089564289920).

20323102153056 is an abundant number, since it is smaller than the sum of its proper divisors (35856026426784).

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

20323102153056 is a wasteful number, since it uses less digits than its factorization.

20323102153056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4600908 (or 4600900 counting only the distinct ones).

The product of its (nonzero) digits is 32400, while the sum is 33.

Adding to 20323102153056 its reverse (65035120132302), we get a palindrome (85358222285358).

The spelling of 20323102153056 in words is "twenty trillion, three hundred twenty-three billion, one hundred two million, one hundred fifty-three thousand, fifty-six".