205202145135 has 16 divisors (see below), whose sum is σ = 353579081184. Its totient is φ = 101022594432.

The previous prime is 205202145101. The next prime is 205202145257. The reversal of 205202145135 is 531541202502.

It is not a de Polignac number, because 205202145135 - 2⁸ = 205202144879 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 526159152 + ... + 526159541.

It is an arithmetic number, because the mean of its divisors is an integer number (22098692574).

Almost surely, 2^205202145135 is an apocalyptic number.

205202145135 is a deficient number, since it is larger than the sum of its proper divisors (148376936049).

205202145135 is a wasteful number, since it uses less digits than its factorization.

205202145135 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1052318714.

The product of its (nonzero) digits is 12000, while the sum is 30.

Adding to 205202145135 its reverse (531541202502), we get a palindrome (736743347637).

The spelling of 205202145135 in words is "two hundred five billion, two hundred two million, one hundred forty-five thousand, one hundred thirty-five".