204162611545 has 32 divisors (see below), whose sum is σ = 271164395520. Its totient is φ = 146880414720.

The previous prime is 204162611507. The next prime is 204162611551. The reversal of 204162611545 is 545116261402.

It is not a de Polignac number, because 204162611545 - 2⁹ = 204162611033 is a prime.

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, 282222 + ... + 698551.

It is an arithmetic number, because the mean of its divisors is an integer number (8473887360).

Almost surely, 2^204162611545 is an apocalyptic number.

It is an amenable number.

204162611545 is a deficient number, since it is larger than the sum of its proper divisors (67001783975).

204162611545 is a wasteful number, since it uses less digits than its factorization.

204162611545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 980905.

The product of its (nonzero) digits is 57600, while the sum is 37.

Adding to 204162611545 its reverse (545116261402), we get a palindrome (749278872947).

The spelling of 204162611545 in words is "two hundred four billion, one hundred sixty-two million, six hundred eleven thousand, five hundred forty-five".