20500416420 has 96 divisors (see below), whose sum is σ = 63239654016. Its totient is φ = 4920576000.

The previous prime is 20500416383. The next prime is 20500416421. The reversal of 20500416420 is 2461400502.

It is not an unprimeable number, because it can be changed into a prime (20500416421) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 87109 + ... + 220428.

It is an arithmetic number, because the mean of its divisors is an integer number (658746396).

Almost surely, 2^20500416420 is an apocalyptic number.

20500416420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20500416420 is an abundant number, since it is smaller than the sum of its proper divisors (42739237596).

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

20500416420 is a wasteful number, since it uses less digits than its factorization.

20500416420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 307661 (or 307659 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 24.

Adding to 20500416420 its reverse (2461400502), we get a palindrome (22961816922).

The spelling of 20500416420 in words is "twenty billion, five hundred million, four hundred sixteen thousand, four hundred twenty".