845295816961 has 4 divisors (see below), whose sum is σ = 848987065300. Its totient is φ = 841604568624.

The previous prime is 845295816941. The next prime is 845295816991. The reversal of 845295816961 is 169618592548.

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 392677689600 + 452618127361 = 626640^2 + 672769^2 .

It is a cyclic number.

It is not a de Polignac number, because 845295816961 - 2⁵ = 845295816929 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 845295816893 and 845295816902.

It is not an unprimeable number, because it can be changed into a prime (845295816901) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1845623826 + ... + 1845624283.

It is an arithmetic number, because the mean of its divisors is an integer number (212246766325).

Almost surely, 2^845295816961 is an apocalyptic number.

It is an amenable number.

845295816961 is a deficient number, since it is larger than the sum of its proper divisors (3691248339).

845295816961 is a wasteful number, since it uses less digits than its factorization.

845295816961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3691248338.

The product of its digits is 37324800, while the sum is 64.

The spelling of 845295816961 in words is "eight hundred forty-five billion, two hundred ninety-five million, eight hundred sixteen thousand, nine hundred sixty-one".