3853855106345 has 4 divisors (see below), whose sum is σ = 4624626127620. Its totient is φ = 3083084085072.

The previous prime is 3853855106333. The next prime is 3853855106399. The reversal of 3853855106345 is 5436015583583.

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 2005364699881 + 1848490406464 = 1416109^2 + 1359592^2 .

It is a cyclic number.

It is not a de Polignac number, because 3853855106345 - 2³⁶ = 3785135629609 is a prime.

It is a Curzon 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, 385385510630 + ... + 385385510639.

It is an arithmetic number, because the mean of its divisors is an integer number (1156156531905).

Almost surely, 2^{3853855106345} is an apocalyptic number.

It is an amenable number.

3853855106345 is a deficient number, since it is larger than the sum of its proper divisors (770771021275).

3853855106345 is an equidigital number, since it uses as much as digits as its factorization.

3853855106345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 770771021274.

The product of its (nonzero) digits is 25920000, while the sum is 56.

The spelling of 3853855106345 in words is "three trillion, eight hundred fifty-three billion, eight hundred fifty-five million, one hundred six thousand, three hundred forty-five".