20216768620 has 48 divisors (see below), whose sum is σ = 44925124608. Its totient is φ = 7626153920.

The previous prime is 20216768617. The next prime is 20216768623. The reversal of 20216768620 is 2686761202.

It is an interprime number because it is at equal distance from previous prime (20216768617) and next prime (20216768623).

It is not an unprimeable number, because it can be changed into a prime (20216768623) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 276844 + ... + 342163.

It is an arithmetic number, because the mean of its divisors is an integer number (935940096).

Almost surely, 2^20216768620 is an apocalyptic number.

20216768620 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20216768620 is an abundant number, since it is smaller than the sum of its proper divisors (24708355988).

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

20216768620 is a wasteful number, since it uses less digits than its factorization.

20216768620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 619110 (or 619108 counting only the distinct ones).

The product of its (nonzero) digits is 96768, while the sum is 40.

The spelling of 20216768620 in words is "twenty billion, two hundred sixteen million, seven hundred sixty-eight thousand, six hundred twenty".