63135687881 has 8 divisors (see below), whose sum is σ = 76399488000. Its totient is φ = 50932991808.

The previous prime is 63135687859. The next prime is 63135687887. The reversal of 63135687881 is 18878653136.

63135687881 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 a cyclic number.

It is not a de Polignac number, because 63135687881 - 2¹⁸ = 63135425737 is a prime.

It is a super-2 number, since 2×63135687881² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (63135687887) 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, 265275881 + ... + 265276118.

It is an arithmetic number, because the mean of its divisors is an integer number (9549936000).

Almost surely, 2^63135687881 is an apocalyptic number.

It is an amenable number.

63135687881 is a deficient number, since it is larger than the sum of its proper divisors (13263800119).

63135687881 is a wasteful number, since it uses less digits than its factorization.

63135687881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 530552023.

The product of its digits is 5806080, while the sum is 56.

The spelling of 63135687881 in words is "sixty-three billion, one hundred thirty-five million, six hundred eighty-seven thousand, eight hundred eighty-one".