20145430435023 has 16 divisors (see below), whose sum is σ = 29854909406560. Its totient is φ = 13425864680448.

The previous prime is 20145430435003. The next prime is 20145430435027. The reversal of 20145430435023 is 32053403454102.

20145430435023 is a `hidden beast` number, since 2 + 0 + 1 + 4 + 543 + 0 + 43 + 50 + 23 = 666.

It is not a de Polignac number, because 20145430435023 - 2⁶ = 20145430434959 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20145430435027) 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 15 ways as a sum of consecutive naturals, for example, 122757490 + ... + 122921487.

It is an arithmetic number, because the mean of its divisors is an integer number (1865931837910).

Almost surely, 2^{20145430435023} is an apocalyptic number.

20145430435023 is a deficient number, since it is larger than the sum of its proper divisors (9709478971537).

20145430435023 is a wasteful number, since it uses less digits than its factorization.

20145430435023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 245682023 (or 245682017 counting only the distinct ones).

The product of its (nonzero) digits is 172800, while the sum is 36.

Adding to 20145430435023 its reverse (32053403454102), we get a palindrome (52198833889125).

The spelling of 20145430435023 in words is "twenty trillion, one hundred forty-five billion, four hundred thirty million, four hundred thirty-five thousand, twenty-three".