205102323234 has 32 divisors (see below), whose sum is σ = 458144533440. Its totient is φ = 68013202176.

The previous prime is 205102323233. The next prime is 205102323241. The reversal of 205102323234 is 432323201502.

205102323234 is a `hidden beast` number, since 2 + 0 + 5 + 102 + 323 + 234 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 205102323198 and 205102323207.

It is not an unprimeable number, because it can be changed into a prime (205102323233) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9829452 + ... + 9850295.

It is an arithmetic number, because the mean of its divisors is an integer number (14317016670).

Almost surely, 2^205102323234 is an apocalyptic number.

205102323234 is an abundant number, since it is smaller than the sum of its proper divisors (253042210206).

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

205102323234 is a wasteful number, since it uses less digits than its factorization.

205102323234 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19679951 (or 19679945 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 27.

Adding to 205102323234 its reverse (432323201502), we get a palindrome (637425524736).

The spelling of 205102323234 in words is "two hundred five billion, one hundred two million, three hundred twenty-three thousand, two hundred thirty-four".