4445642106205 has 4 divisors (see below), whose sum is σ = 5334770527452. Its totient is φ = 3556513684960.

The previous prime is 4445642106149. The next prime is 4445642106223. The reversal of 4445642106205 is 5026012465444.

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 2445980265369 + 1999661840836 = 1563963^2 + 1414094^2 .

It is not a de Polignac number, because 4445642106205 - 2⁹ = 4445642105693 is a prime.

It is a Duffinian number.

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, 444564210616 + ... + 444564210625.

It is an arithmetic number, because the mean of its divisors is an integer number (1333692631863).

Almost surely, 2^{4445642106205} is an apocalyptic number.

It is an amenable number.

4445642106205 is a deficient number, since it is larger than the sum of its proper divisors (889128421247).

4445642106205 is an equidigital number, since it uses as much as digits as its factorization.

4445642106205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 889128421246.

The product of its (nonzero) digits is 921600, while the sum is 43.

The spelling of 4445642106205 in words is "four trillion, four hundred forty-five billion, six hundred forty-two million, one hundred six thousand, two hundred five".