20145254042331 has 48 divisors (see below), whose sum is σ = 31824833040000. Its totient is φ = 12178175368320.

The previous prime is 20145254042233. The next prime is 20145254042447. The reversal of 20145254042331 is 13324045254102.

It is a happy number.

20145254042331 is a `hidden beast` number, since 2 + 0 + 1 + 45 + 2 + 540 + 42 + 3 + 31 = 666.

It is not a de Polignac number, because 20145254042331 - 2¹⁸ = 20145253780187 is a prime.

It is a super-2 number, since 2×20145254042331² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (20145254022331) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 561146820 + ... + 561182718.

It is an arithmetic number, because the mean of its divisors is an integer number (663017355000).

Almost surely, 2^{20145254042331} is an apocalyptic number.

20145254042331 is a deficient number, since it is larger than the sum of its proper divisors (11679578997669).

20145254042331 is a wasteful number, since it uses less digits than its factorization.

20145254042331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50184 (or 50181 counting only the distinct ones).

The product of its (nonzero) digits is 115200, while the sum is 36.

Adding to 20145254042331 its reverse (13324045254102), we get a palindrome (33469299296433).

The spelling of 20145254042331 in words is "twenty trillion, one hundred forty-five billion, two hundred fifty-four million, forty-two thousand, three hundred thirty-one".