20123550021184 has 63 divisors (see below), whose sum is σ = 40236106967427. Its totient is φ = 9985891052544.

The previous prime is 20123550021181. The next prime is 20123550021229. The reversal of 20123550021184 is 48112005532102.

The square root of 20123550021184 is 4485928.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 71774784 + 20123478246400 = 8472^2 + 4485920^2 .

It is a super-3 number, since 3×20123550021184³ (a number of 41 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20123550021181) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 4916575042 + ... + 4916579134.

Almost surely, 2^{20123550021184} is an apocalyptic number.

20123550021184 is the 4485928-th square number.

It is an amenable number.

20123550021184 is a deficient number, since it is larger than the sum of its proper divisors (20112556946243).

20123550021184 is an frugal number, since it uses more digits than its factorization.

20123550021184 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8472 (or 4232 counting only the distinct ones).

The product of its (nonzero) digits is 19200, while the sum is 34.

Adding to 20123550021184 its reverse (48112005532102), we get a palindrome (68235555553286).

The spelling of 20123550021184 in words is "twenty trillion, one hundred twenty-three billion, five hundred fifty million, twenty-one thousand, one hundred eighty-four".