4518665627656 has 16 divisors (see below), whose sum is σ = 8480574805500. Its totient is φ = 2257179012864.

The previous prime is 4518665627603. The next prime is 4518665627743. The reversal of 4518665627656 is 6567265668154.

It can be written as a sum of positive squares in 2 ways, for example, as 4500057939556 + 18607688100 = 2121334^2 + 136410^2 .

It is a junction number, because it is equal to n+sod(n) for n = 4518665627591 and 4518665627600.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 269216205 + ... + 269232988.

Almost surely, 2^{4518665627656} is an apocalyptic number.

It is an amenable number.

4518665627656 is a deficient number, since it is larger than the sum of its proper divisors (3961909177844).

4518665627656 is a wasteful number, since it uses less digits than its factorization.

4518665627656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 538450248 (or 538450244 counting only the distinct ones).

The product of its digits is 435456000, while the sum is 67.

The spelling of 4518665627656 in words is "four trillion, five hundred eighteen billion, six hundred sixty-five million, six hundred twenty-seven thousand, six hundred fifty-six".