204145220245530 has 64 divisors (see below), whose sum is σ = 511434745106688. Its totient is φ = 52053072698880.

The previous prime is 204145220245493. The next prime is 204145220245541. The reversal of 204145220245530 is 35542022541402.

204145220245530 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 51354061 + ... + 55186320.

It is an arithmetic number, because the mean of its divisors is an integer number (7991167892292).

Almost surely, 2^{204145220245530} is an apocalyptic number.

204145220245530 is an abundant number, since it is smaller than the sum of its proper divisors (307289524861158).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

204145220245530 is a wasteful number, since it uses less digits than its factorization.

204145220245530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106543191.

The product of its (nonzero) digits is 384000, while the sum is 39.

Adding to 204145220245530 its reverse (35542022541402), we get a palindrome (239687242786932).

The spelling of 204145220245530 in words is "two hundred four trillion, one hundred forty-five billion, two hundred twenty million, two hundred forty-five thousand, five hundred thirty".