18316653166656 has 140 divisors (see below), whose sum is σ = 58472936601772. Its totient is φ = 5635893261312.

The previous prime is 18316653166589. The next prime is 18316653166657. The reversal of 18316653166656 is 65666135661381.

It can be written as a sum of positive squares in 2 ways, for example, as 11995250389056 + 6321402777600 = 3463416^2 + 2514240^2 .

It is a junction number, because it is equal to n+sod(n) for n = 18316653166593 and 18316653166602.

It is not an unprimeable number, because it can be changed into a prime (18316653166657) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 135828955 + ... + 135963738.

Almost surely, 2^{18316653166656} is an apocalyptic number.

18316653166656 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

18316653166656 is an abundant number, since it is smaller than the sum of its proper divisors (40156283435116).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

18316653166656 is a wasteful number, since it uses less digits than its factorization.

18316653166656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 271792730 (or 271792711 counting only the distinct ones).

The product of its digits is 83980800, while the sum is 63.

The spelling of 18316653166656 in words is "eighteen trillion, three hundred sixteen billion, six hundred fifty-three million, one hundred sixty-six thousand, six hundred fifty-six".