20324163456 has 192 divisors, whose sum is σ = 60614960640. Its totient is φ = 6529766400.

The previous prime is 20324163439. The next prime is 20324163469. The reversal of 20324163456 is 65436142302.

20324163456 is a `hidden beast` number, since 20 + 3 + 24 + 163 + 456 = 666.

It is a tau number, because it is divible by the number of its divisors (192).

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

It is a self number, because there is not a number n which added to its sum of digits gives 20324163456.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 10105491 + ... + 10107501.

It is an arithmetic number, because the mean of its divisors is an integer number (315702920).

Almost surely, 2^20324163456 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 20324163456, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30307480320).

20324163456 is an abundant number, since it is smaller than the sum of its proper divisors (40290797184).

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

20324163456 is a wasteful number, since it uses less digits than its factorization.

20324163456 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2345 (or 2330 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 36.

The spelling of 20324163456 in words is "twenty billion, three hundred twenty-four million, one hundred sixty-three thousand, four hundred fifty-six".