205383871441445 has 4 divisors (see below), whose sum is σ = 246460645729740. Its totient is φ = 164307097153152.

The previous prime is 205383871441349. The next prime is 205383871441451. The reversal of 205383871441445 is 544144178383502.

205383871441445 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 97638765600289 + 107745105841156 = 9881233^2 + 10380034^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-205383871441445 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20538387144140 + ... + 20538387144149.

It is an arithmetic number, because the mean of its divisors is an integer number (61615161432435).

Almost surely, 2^{205383871441445} is an apocalyptic number.

It is an amenable number.

205383871441445 is a deficient number, since it is larger than the sum of its proper divisors (41076774288295).

205383871441445 is an equidigital number, since it uses as much as digits as its factorization.

205383871441445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41076774288294.

The product of its (nonzero) digits is 51609600, while the sum is 59.

The spelling of 205383871441445 in words is "two hundred five trillion, three hundred eighty-three billion, eight hundred seventy-one million, four hundred forty-one thousand, four hundred forty-five".