20504453043142 has 16 divisors (see below), whose sum is σ = 30785610258432. Its totient is φ = 10242583348680.

The previous prime is 20504453043079. The next prime is 20504453043143. The reversal of 20504453043142 is 24134035440502.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20504453043143) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 196179517 + ... + 196284007.

It is an arithmetic number, because the mean of its divisors is an integer number (1924100641152).

Almost surely, 2^{20504453043142} is an apocalyptic number.

20504453043142 is a deficient number, since it is larger than the sum of its proper divisors (10281157215290).

20504453043142 is a wasteful number, since it uses less digits than its factorization.

20504453043142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 195843.

The product of its (nonzero) digits is 230400, while the sum is 37.

Adding to 20504453043142 its reverse (24134035440502), we get a palindrome (44638488483644).

The spelling of 20504453043142 in words is "twenty trillion, five hundred four billion, four hundred fifty-three million, forty-three thousand, one hundred forty-two".