204030051523 has 4 divisors (see below), whose sum is σ = 207374806528. Its totient is φ = 200685296520.

The previous prime is 204030051503. The next prime is 204030051539. The reversal of 204030051523 is 325150030402.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 204030051523 - 2²¹ = 204027954371 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (204030051503) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1672377411 + ... + 1672377532.

It is an arithmetic number, because the mean of its divisors is an integer number (51843701632).

Almost surely, 2^204030051523 is an apocalyptic number.

204030051523 is a deficient number, since it is larger than the sum of its proper divisors (3344755005).

204030051523 is an equidigital number, since it uses as much as digits as its factorization.

204030051523 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3344755004.

The product of its (nonzero) digits is 3600, while the sum is 25.

Adding to 204030051523 its reverse (325150030402), we get a palindrome (529180081925).

The spelling of 204030051523 in words is "two hundred four billion, thirty million, fifty-one thousand, five hundred twenty-three".