395871694857 has 12 divisors (see below), whose sum is σ = 571824997120. Its totient is φ = 263909697048.

The previous prime is 395871694847. The next prime is 395871694891. The reversal of 395871694857 is 758496178593.

395871694857 is a `hidden beast` number, since 3 + 9 + 5 + 87 + 1 + 69 + 485 + 7 = 666.

It is not a de Polignac number, because 395871694857 - 2¹² = 395871690761 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (395871694847) 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 11 ways as a sum of consecutive naturals, for example, 171744 + ... + 906222.

Almost surely, 2^395871694857 is an apocalyptic number.

It is an amenable number.

395871694857 is a deficient number, since it is larger than the sum of its proper divisors (175953302263).

395871694857 is a wasteful number, since it uses less digits than its factorization.

395871694857 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 794372 (or 794369 counting only the distinct ones).

The product of its digits is 457228800, while the sum is 72.

The spelling of 395871694857 in words is "three hundred ninety-five billion, eight hundred seventy-one million, six hundred ninety-four thousand, eight hundred fifty-seven".