3845212113641 has 4 divisors (see below), whose sum is σ = 3871018906500. Its totient is φ = 3819405320784.

The previous prime is 3845212113607. The next prime is 3845212113683. The reversal of 3845212113641 is 1463112125483.

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 328668303616 + 3516543810025 = 573296^2 + 1875245^2 .

It is a cyclic number.

It is not a de Polignac number, because 3845212113641 - 2¹⁴ = 3845212097257 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3845212119641) 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, 12903396206 + ... + 12903396503.

It is an arithmetic number, because the mean of its divisors is an integer number (967754726625).

Almost surely, 2^{3845212113641} is an apocalyptic number.

It is an amenable number.

3845212113641 is a deficient number, since it is larger than the sum of its proper divisors (25806792859).

3845212113641 is a wasteful number, since it uses less digits than its factorization.

3845212113641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25806792858.

The product of its digits is 138240, while the sum is 41.

The spelling of 3845212113641 in words is "three trillion, eight hundred forty-five billion, two hundred twelve million, one hundred thirteen thousand, six hundred forty-one".