63857606855 has 32 divisors (see below), whose sum is σ = 92763792000. Its totient is φ = 41196257280.

The previous prime is 63857606849. The next prime is 63857606867. The reversal of 63857606855 is 55860675836.

It is not a de Polignac number, because 63857606855 - 2¹⁰ = 63857605831 is a prime.

It is a Smith number, since the sum of its digits (59) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 63857606794 and 63857606803.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1616135 + ... + 1655175.

It is an arithmetic number, because the mean of its divisors is an integer number (2898868500).

Almost surely, 2^63857606855 is an apocalyptic number.

63857606855 is a deficient number, since it is larger than the sum of its proper divisors (28906185145).

63857606855 is a wasteful number, since it uses less digits than its factorization.

63857606855 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41819.

The product of its (nonzero) digits is 36288000, while the sum is 59.

The spelling of 63857606855 in words is "sixty-three billion, eight hundred fifty-seven million, six hundred six thousand, eight hundred fifty-five".