63727610856 has 128 divisors (see below), whose sum is σ = 199785035520. Its totient is φ = 16490133504.

The previous prime is 63727610831. The next prime is 63727610879. The reversal of 63727610856 is 65801672736.

It is a super-3 number, since 3×63727610856³ (a number of 33 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Smith number, since the sum of its digits (51) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 63727610799 and 63727610808.

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, 159525 + ... + 391028.

It is an arithmetic number, because the mean of its divisors is an integer number (1560820590).

Almost surely, 2^63727610856 is an apocalyptic number.

It is an amenable number.

63727610856 is an abundant number, since it is smaller than the sum of its proper divisors (136057424664).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

63727610856 is a wasteful number, since it uses less digits than its factorization.

63727610856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 550635 (or 550631 counting only the distinct ones).

The product of its (nonzero) digits is 2540160, while the sum is 51.

The spelling of 63727610856 in words is "sixty-three billion, seven hundred twenty-seven million, six hundred ten thousand, eight hundred fifty-six".