20323008000 has 640 divisors, whose sum is σ = 79155648000. Its totient is φ = 5125939200.

The previous prime is 20323007983. The next prime is 20323008031. The reversal of 20323008000 is 80032302.

It is a tau number, because it is divible by the number of its divisors (640).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 32831691 + ... + 32832309.

It is an arithmetic number, because the mean of its divisors is an integer number (123680700).

Almost surely, 2^20323008000 is an apocalyptic number.

20323008000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20323008000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (39577824000).

20323008000 is an abundant number, since it is smaller than the sum of its proper divisors (58832640000).

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

20323008000 is an equidigital number, since it uses as much as digits as its factorization.

20323008000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 680 (or 648 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The spelling of 20323008000 in words is "twenty billion, three hundred twenty-three million, eight thousand".