20305214500 has 48 divisors (see below), whose sum is σ = 46680641280. Its totient is φ = 7694604000.

The previous prime is 20305214491. The next prime is 20305214507. The reversal of 20305214500 is 541250302.

It is not an unprimeable number, because it can be changed into a prime (20305214507) 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, 1059196 + ... + 1078195.

It is an arithmetic number, because the mean of its divisors is an integer number (972513360).

Almost surely, 2^20305214500 is an apocalyptic number.

20305214500 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20305214500 is an abundant number, since it is smaller than the sum of its proper divisors (26375426780).

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

20305214500 is a wasteful number, since it uses less digits than its factorization.

20305214500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2137429 (or 2137417 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 22.

Adding to 20305214500 its reverse (541250302), we get a palindrome (20846464802).

The spelling of 20305214500 in words is "twenty billion, three hundred five million, two hundred fourteen thousand, five hundred".