20452451531121 has 48 divisors (see below), whose sum is σ = 30639290572800. Its totient is φ = 13131147085056.

The previous prime is 20452451531089. The next prime is 20452451531129. The reversal of 20452451531121 is 12113515425402.

20452451531121 is a `hidden beast` number, since 2 + 0 + 4 + 5 + 24 + 515 + 3 + 112 + 1 = 666.

It is not a de Polignac number, because 20452451531121 - 2⁵ = 20452451531089 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20452451531129) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 414252525 + ... + 414301893.

It is an arithmetic number, because the mean of its divisors is an integer number (638318553600).

Almost surely, 2^{20452451531121} is an apocalyptic number.

It is an amenable number.

20452451531121 is a deficient number, since it is larger than the sum of its proper divisors (10186839041679).

20452451531121 is a wasteful number, since it uses less digits than its factorization.

20452451531121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53430 (or 53427 counting only the distinct ones).

The product of its (nonzero) digits is 48000, while the sum is 36.

Adding to 20452451531121 its reverse (12113515425402), we get a palindrome (32565966956523).

The spelling of 20452451531121 in words is "twenty trillion, four hundred fifty-two billion, four hundred fifty-one million, five hundred thirty-one thousand, one hundred twenty-one".