205960020145 has 8 divisors (see below), whose sum is σ = 269620390080. Its totient is φ = 149789105520.

The previous prime is 205960020143. The next prime is 205960020179. The reversal of 205960020145 is 541020069502.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 205960020145 - 2¹ = 205960020143 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 205960020145.

It is not an unprimeable number, because it can be changed into a prime (205960020143) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1872363765 + ... + 1872363874.

It is an arithmetic number, because the mean of its divisors is an integer number (33702548760).

Almost surely, 2^205960020145 is an apocalyptic number.

It is an amenable number.

205960020145 is a deficient number, since it is larger than the sum of its proper divisors (63660369935).

205960020145 is a wasteful number, since it uses less digits than its factorization.

205960020145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3744727655.

The product of its (nonzero) digits is 21600, while the sum is 34.

Adding to 205960020145 its reverse (541020069502), we get a palindrome (746980089647).

The spelling of 205960020145 in words is "two hundred five billion, nine hundred sixty million, twenty thousand, one hundred forty-five".