205234223154 has 16 divisors (see below), whose sum is σ = 434613649248. Its totient is φ = 64387207232.

The previous prime is 205234223147. The next prime is 205234223177. The reversal of 205234223154 is 451322432502.

205234223154 is digitally balanced in base 3, 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 7 ways as a sum of consecutive naturals, for example, 1006050012 + ... + 1006050215.

It is an arithmetic number, because the mean of its divisors is an integer number (27163353078).

Almost surely, 2^205234223154 is an apocalyptic number.

205234223154 is an abundant number, since it is smaller than the sum of its proper divisors (229379426094).

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

205234223154 is a wasteful number, since it uses less digits than its factorization.

205234223154 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2012100249.

The product of its (nonzero) digits is 57600, while the sum is 33.

Adding to 205234223154 its reverse (451322432502), we get a palindrome (656556655656).

The spelling of 205234223154 in words is "two hundred five billion, two hundred thirty-four million, two hundred twenty-three thousand, one hundred fifty-four".