6918014278664 has 32 divisors (see below), whose sum is σ = 13751228282400. Its totient is φ = 3251521854720.

The previous prime is 6918014278649. The next prime is 6918014278727. The reversal of 6918014278664 is 4668724108196.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 6918014278597 and 6918014278606.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31250834 + ... + 31471425.

It is an arithmetic number, because the mean of its divisors is an integer number (429725883825).

Almost surely, 2^{6918014278664} is an apocalyptic number.

It is an amenable number.

6918014278664 is a deficient number, since it is larger than the sum of its proper divisors (6833214003736).

6918014278664 is a wasteful number, since it uses less digits than its factorization.

6918014278664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62723093 (or 62723089 counting only the distinct ones).

The product of its (nonzero) digits is 27869184, while the sum is 62.

The spelling of 6918014278664 in words is "six trillion, nine hundred eighteen billion, fourteen million, two hundred seventy-eight thousand, six hundred sixty-four".