20476550420 has 24 divisors (see below), whose sum is σ = 45263954400. Its totient is φ = 7759534752.

The previous prime is 20476550389. The next prime is 20476550459. The reversal of 20476550420 is 2405567402.

It is a congruent number.

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, 26942450 + ... + 26943209.

It is an arithmetic number, because the mean of its divisors is an integer number (1885998100).

Almost surely, 2^20476550420 is an apocalyptic number.

20476550420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20476550420 is an abundant number, since it is smaller than the sum of its proper divisors (24787403980).

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

20476550420 is a wasteful number, since it uses less digits than its factorization.

20476550420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53885687 (or 53885685 counting only the distinct ones).

The product of its (nonzero) digits is 67200, while the sum is 35.

The spelling of 20476550420 in words is "twenty billion, four hundred seventy-six million, five hundred fifty thousand, four hundred twenty".