851363713234945 has 12 divisors (see below), whose sum is σ = 1085267792236284. Its totient is φ = 641026795846400.

The previous prime is 851363713234921. The next prime is 851363713234997. The reversal of 851363713234945 is 549432317363158.

It can be written as a sum of positive squares in 6 ways, for example, as 204102339300721 + 647261373934224 = 14286439^2 + 25441332^2 .

It is a de Polignac number, because none of the positive numbers 2^k-851363713234945 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 294589518706 + ... + 294589521595.

It is an arithmetic number, because the mean of its divisors is an integer number (90438982686357).

Almost surely, 2^{851363713234945} is an apocalyptic number.

851363713234945 is a gapful number since it is divisible by the number (85) formed by its first and last digit.

It is an amenable number.

851363713234945 is a deficient number, since it is larger than the sum of its proper divisors (233904079001339).

851363713234945 is a wasteful number, since it uses less digits than its factorization.

851363713234945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 589179040340 (or 589179040323 counting only the distinct ones).

The product of its digits is 195955200, while the sum is 64.

The spelling of 851363713234945 in words is "eight hundred fifty-one trillion, three hundred sixty-three billion, seven hundred thirteen million, two hundred thirty-four thousand, nine hundred forty-five".