2045843508385 has 4 divisors (see below), whose sum is σ = 2455012210068. Its totient is φ = 1636674806704.

The previous prime is 2045843508377. The next prime is 2045843508469. The reversal of 2045843508385 is 5838053485402.

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 861037382241 + 1184806126144 = 927921^2 + 1088488^2 .

It is a cyclic number.

It is not a de Polignac number, because 2045843508385 - 2³ = 2045843508377 is a prime.

It is a Duffinian 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, 204584350834 + ... + 204584350843.

It is an arithmetic number, because the mean of its divisors is an integer number (613753052517).

Almost surely, 2^{2045843508385} is an apocalyptic number.

It is an amenable number.

2045843508385 is a deficient number, since it is larger than the sum of its proper divisors (409168701683).

2045843508385 is an equidigital number, since it uses as much as digits as its factorization.

2045843508385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 409168701682.

The product of its (nonzero) digits is 18432000, while the sum is 55.

The spelling of 2045843508385 in words is "two trillion, forty-five billion, eight hundred forty-three million, five hundred eight thousand, three hundred eighty-five".