20145204235504 has 10 divisors (see below), whose sum is σ = 39031333206320. Its totient is φ = 10072602117744.

The previous prime is 20145204235477. The next prime is 20145204235549. The reversal of 20145204235504 is 40553240254102.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 629537632344 + ... + 629537632375.

It is an arithmetic number, because the mean of its divisors is an integer number (3903133320632).

Almost surely, 2^{20145204235504} is an apocalyptic number.

It is an amenable number.

20145204235504 is a deficient number, since it is larger than the sum of its proper divisors (18886128970816).

20145204235504 is a wasteful number, since it uses less digits than its factorization.

20145204235504 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1259075264727 (or 1259075264721 counting only the distinct ones).

The product of its (nonzero) digits is 192000, while the sum is 37.

Adding to 20145204235504 its reverse (40553240254102), we get a palindrome (60698444489606).

The spelling of 20145204235504 in words is "twenty trillion, one hundred forty-five billion, two hundred four million, two hundred thirty-five thousand, five hundred four".