202156245434 has 16 divisors (see below), whose sum is σ = 356247370080. Its totient is φ = 84820802160.

The previous prime is 202156245427. The next prime is 202156245437. The reversal of 202156245434 is 434542651202.

202156245434 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (202156245437) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 353419724 + ... + 353420295.

It is an arithmetic number, because the mean of its divisors is an integer number (22265460630).

Almost surely, 2^202156245434 is an apocalyptic number.

202156245434 is a deficient number, since it is larger than the sum of its proper divisors (154091124646).

202156245434 is a wasteful number, since it uses less digits than its factorization.

202156245434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 706840045.

The product of its (nonzero) digits is 230400, while the sum is 38.

Adding to 202156245434 its reverse (434542651202), we get a palindrome (636698896636).

The spelling of 202156245434 in words is "two hundred two billion, one hundred fifty-six million, two hundred forty-five thousand, four hundred thirty-four".