63947986874 has 8 divisors (see below), whose sum is σ = 96424190208. Its totient is φ = 31806590140.

The previous prime is 63947986873. The next prime is 63947986919. The reversal of 63947986874 is 47868974936.

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

It is a junction number, because it is equal to n+sod(n) for n = 63947986798 and 63947986807.

It is not an unprimeable number, because it can be changed into a prime (63947986873) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 83701172 + ... + 83701935.

It is an arithmetic number, because the mean of its divisors is an integer number (12053023776).

Almost surely, 2^63947986874 is an apocalyptic number.

63947986874 is a deficient number, since it is larger than the sum of its proper divisors (32476203334).

63947986874 is a wasteful number, since it uses less digits than its factorization.

63947986874 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 167403300.

The product of its digits is 438939648, while the sum is 71.

The spelling of 63947986874 in words is "sixty-three billion, nine hundred forty-seven million, nine hundred eighty-six thousand, eight hundred seventy-four".