205752374851 has 4 divisors (see below), whose sum is σ = 205785550872. Its totient is φ = 205719198832.

The previous prime is 205752374813. The next prime is 205752374881. The reversal of 205752374851 is 158473257502.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 205752374851 - 2⁹ = 205752374339 is a prime.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 205752374795 and 205752374804.

It is not an unprimeable number, because it can be changed into a prime (205752374881) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16578706 + ... + 16591111.

It is an arithmetic number, because the mean of its divisors is an integer number (51446387718).

Almost surely, 2^205752374851 is an apocalyptic number.

205752374851 is a deficient number, since it is larger than the sum of its proper divisors (33176021).

205752374851 is an equidigital number, since it uses as much as digits as its factorization.

205752374851 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33176020.

The product of its (nonzero) digits is 2352000, while the sum is 49.

The spelling of 205752374851 in words is "two hundred five billion, seven hundred fifty-two million, three hundred seventy-four thousand, eight hundred fifty-one".