63708857345871 has 12 divisors (see below), whose sum is σ = 92031143787648. Its totient is φ = 42469230610464.

The previous prime is 63708857345867. The next prime is 63708857345921. The reversal of 63708857345871 is 17854375880736.

63708857345871 is a `hidden beast` number, since 6 + 3 + 7 + 0 + 8 + 8 + 5 + 7 + 34 + 587 + 1 = 666.

It is not a de Polignac number, because 63708857345871 - 2² = 63708857345867 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 63708857345871.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63708857345821) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 278292015 + ... + 278520848.

It is an arithmetic number, because the mean of its divisors is an integer number (7669261982304).

Almost surely, 2^{63708857345871} is an apocalyptic number.

63708857345871 is a deficient number, since it is larger than the sum of its proper divisors (28322286441777).

63708857345871 is a wasteful number, since it uses less digits than its factorization.

63708857345871 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 556825582 (or 556825579 counting only the distinct ones).

The product of its (nonzero) digits is 948326400, while the sum is 72.

The spelling of 63708857345871 in words is "sixty-three trillion, seven hundred eight billion, eight hundred fifty-seven million, three hundred forty-five thousand, eight hundred seventy-one".