205286400001 has 4 divisors (see below), whose sum is σ = 205300482052. Its totient is φ = 205272317952.

The previous prime is 205286399999. The next prime is 205286400029. The reversal of 205286400001 is 100004682502.

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

It can be written as a sum of positive squares in 2 ways, for example, as 102911998401 + 102374401600 = 320799^2 + 319960^2 .

It is a cyclic number.

It is not a de Polignac number, because 205286400001 - 2¹ = 205286399999 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (205286400041) 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, 7019136 + ... + 7048321.

It is an arithmetic number, because the mean of its divisors is an integer number (51325120513).

Almost surely, 2^205286400001 is an apocalyptic number.

It is an amenable number.

205286400001 is a deficient number, since it is larger than the sum of its proper divisors (14082051).

205286400001 is a wasteful number, since it uses less digits than its factorization.

205286400001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14082050.

The product of its (nonzero) digits is 3840, while the sum is 28.

The spelling of 205286400001 in words is "two hundred five billion, two hundred eighty-six million, four hundred thousand, one".