20968316928 has 336 divisors, whose sum is σ = 66122312256. Its totient is φ = 6364200960.

The previous prime is 20968316927. The next prime is 20968316933. The reversal of 20968316928 is 82961386902.

It is not an unprimeable number, because it can be changed into a prime (20968316923) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 125558701 + ... + 125558867.

It is an arithmetic number, because the mean of its divisors is an integer number (196792596).

Almost surely, 2^20968316928 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 20968316928, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33061156128).

20968316928 is an abundant number, since it is smaller than the sum of its proper divisors (45153995328).

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

20968316928 is a wasteful number, since it uses less digits than its factorization.

20968316928 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 343 (or 316 counting only the distinct ones).

The product of its (nonzero) digits is 2239488, while the sum is 54.

The spelling of 20968316928 in words is "twenty billion, nine hundred sixty-eight million, three hundred sixteen thousand, nine hundred twenty-eight".