20293216768 has 80 divisors (see below), whose sum is σ = 44311940640. Its totient is φ = 9207705600.

The previous prime is 20293216759. The next prime is 20293216777. The reversal of 20293216768 is 86761239202.

It is an interprime number because it is at equal distance from previous prime (20293216759) and next prime (20293216777).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3483298 + ... + 3489118.

It is an arithmetic number, because the mean of its divisors is an integer number (553899258).

Almost surely, 2^20293216768 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 20293216768, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22155970320).

20293216768 is an abundant number, since it is smaller than the sum of its proper divisors (24018723872).

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

20293216768 is an equidigital number, since it uses as much as digits as its factorization.

20293216768 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6469 (or 6453 counting only the distinct ones).

The product of its (nonzero) digits is 435456, while the sum is 46.

The spelling of 20293216768 in words is "twenty billion, two hundred ninety-three million, two hundred sixteen thousand, seven hundred sixty-eight".