6395777902845 has 24 divisors (see below), whose sum is σ = 11087947850616. Its totient is φ = 3410486834688.

The previous prime is 6395777902807. The next prime is 6395777902853. The reversal of 6395777902845 is 5482097775936.

6395777902845 is a `hidden beast` number, since 6 + 3 + 9 + 577 + 7 + 9 + 0 + 2 + 8 + 45 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 658478692089 + 5737299210756 = 811467^2 + 2395266^2 .

It is not a de Polignac number, because 6395777902845 - 2¹¹ = 6395777900797 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 12128832 + ... + 12645161.

It is an arithmetic number, because the mean of its divisors is an integer number (461997827109).

Almost surely, 2^{6395777902845} is an apocalyptic number.

It is an amenable number.

6395777902845 is a deficient number, since it is larger than the sum of its proper divisors (4692169947771).

6395777902845 is a wasteful number, since it uses less digits than its factorization.

6395777902845 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24779741 (or 24779738 counting only the distinct ones).

The product of its (nonzero) digits is 800150400, while the sum is 72.

The spelling of 6395777902845 in words is "six trillion, three hundred ninety-five billion, seven hundred seventy-seven million, nine hundred two thousand, eight hundred forty-five".