20554042020 has 24 divisors (see below), whose sum is σ = 57551317824. Its totient is φ = 5481077856.

The previous prime is 20554042009. The next prime is 20554042027. The reversal of 20554042020 is 2024045502.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (20554042027) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 171283624 + ... + 171283743.

It is an arithmetic number, because the mean of its divisors is an integer number (2397971576).

Almost surely, 2^20554042020 is an apocalyptic number.

20554042020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20554042020 is an abundant number, since it is smaller than the sum of its proper divisors (36997275804).

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

20554042020 is a wasteful number, since it uses less digits than its factorization.

20554042020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 342567379 (or 342567377 counting only the distinct ones).

The product of its (nonzero) digits is 3200, while the sum is 24.

Adding to 20554042020 its reverse (2024045502), we get a palindrome (22578087522).

The spelling of 20554042020 in words is "twenty billion, five hundred fifty-four million, forty-two thousand, twenty".