20554532240224 has 96 divisors (see below), whose sum is σ = 42157065371904. Its totient is φ = 9854479165440.

The previous prime is 20554532240161. The next prime is 20554532240233. The reversal of 20554532240224 is 42204223545502.

It is a super-2 number, since 2×20554532240224² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 50079102 + ... + 50487874.

It is an arithmetic number, because the mean of its divisors is an integer number (439136097624).

Almost surely, 2^{20554532240224} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20554532240224, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21078532685952).

20554532240224 is an abundant number, since it is smaller than the sum of its proper divisors (21602533131680).

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

20554532240224 is a wasteful number, since it uses less digits than its factorization.

20554532240224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 409280 (or 409272 counting only the distinct ones).

The product of its (nonzero) digits is 768000, while the sum is 40.

Adding to 20554532240224 its reverse (42204223545502), we get a palindrome (62758755785726).

The spelling of 20554532240224 in words is "twenty trillion, five hundred fifty-four billion, five hundred thirty-two million, two hundred forty thousand, two hundred twenty-four".