20413544220 has 72 divisors (see below), whose sum is σ = 61972629264. Its totient is φ = 5439080448.

The previous prime is 20413544219. The next prime is 20413544233. The reversal of 20413544220 is 2244531402.

20413544220 is a `hidden beast` number, since 20 + 413 + 5 + 4 + 4 + 220 = 666.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 172467 + ... + 265653.

It is an arithmetic number, because the mean of its divisors is an integer number (860730962).

Almost surely, 2^20413544220 is an apocalyptic number.

20413544220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20413544220 is an abundant number, since it is smaller than the sum of its proper divisors (41559085044).

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

20413544220 is a wasteful number, since it uses less digits than its factorization.

20413544220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 94419 (or 94414 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 27.

The spelling of 20413544220 in words is "twenty billion, four hundred thirteen million, five hundred forty-four thousand, two hundred twenty".