20820501300 has 36 divisors (see below), whose sum is σ = 60240651296. Its totient is φ = 5552133600.

The previous prime is 20820501269. The next prime is 20820501329. The reversal of 20820501300 is 310502802.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 34700536 + ... + 34701135.

Almost surely, 2^20820501300 is an apocalyptic number.

20820501300 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20820501300 is an abundant number, since it is smaller than the sum of its proper divisors (39420149996).

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

20820501300 is a wasteful number, since it uses less digits than its factorization.

20820501300 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69401688 (or 69401681 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 21.

The spelling of 20820501300 in words is "twenty billion, eight hundred twenty million, five hundred one thousand, three hundred".