205083842505 has 16 divisors (see below), whose sum is σ = 333513397824. Its totient is φ = 107584966080.

The previous prime is 205083842503. The next prime is 205083842521. The reversal of 205083842505 is 505248380502.

It is a happy number.

It is not a de Polignac number, because 205083842505 - 2¹ = 205083842503 is a prime.

It is not an unprimeable number, because it can be changed into a prime (205083842503) 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, 112066759 + ... + 112068588.

It is an arithmetic number, because the mean of its divisors is an integer number (20844587364).

Almost surely, 2^205083842505 is an apocalyptic number.

It is an amenable number.

205083842505 is a deficient number, since it is larger than the sum of its proper divisors (128429555319).

205083842505 is a wasteful number, since it uses less digits than its factorization.

205083842505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 224135416.

The product of its (nonzero) digits is 384000, while the sum is 42.

The spelling of 205083842505 in words is "two hundred five billion, eighty-three million, eight hundred forty-two thousand, five hundred five".