20000554421020 has 96 divisors (see below), whose sum is σ = 44279539315200. Its totient is φ = 7576853566464.

The previous prime is 20000554420969. The next prime is 20000554421039. The reversal of 20000554421020 is 2012445500002.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 136627626 + ... + 136773934.

It is an arithmetic number, because the mean of its divisors is an integer number (461245201200).

Almost surely, 2^{20000554421020} is an apocalyptic number.

20000554421020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20000554421020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22139769657600).

20000554421020 is an abundant number, since it is smaller than the sum of its proper divisors (24278984894180).

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

20000554421020 is a wasteful number, since it uses less digits than its factorization.

20000554421020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 150847 (or 150845 counting only the distinct ones).

The product of its (nonzero) digits is 3200, while the sum is 25.

Adding to 20000554421020 its reverse (2012445500002), we get a palindrome (22012999921022).

The spelling of 20000554421020 in words is "twenty trillion, five hundred fifty-four million, four hundred twenty-one thousand, twenty".