63877419681 has 8 divisors (see below), whose sum is σ = 85171499424. Its totient is φ = 42584143200.

The previous prime is 63877419679. The next prime is 63877419733. The reversal of 63877419681 is 18691477836.

63877419681 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 63877419681 - 2¹ = 63877419679 is a prime.

It is a super-2 number, since 2×63877419681² (a number of 22 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (60) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (63877419601) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19165 + ... + 357941.

It is an arithmetic number, because the mean of its divisors is an integer number (10646437428).

Almost surely, 2^63877419681 is an apocalyptic number.

It is an amenable number.

63877419681 is a deficient number, since it is larger than the sum of its proper divisors (21294079743).

63877419681 is a wasteful number, since it uses less digits than its factorization.

63877419681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 401631.

The product of its digits is 12192768, while the sum is 60.

The spelling of 63877419681 in words is "sixty-three billion, eight hundred seventy-seven million, four hundred nineteen thousand, six hundred eighty-one".