18263656716 has 36 divisors (see below), whose sum is σ = 45269441448. Its totient is φ = 5729773568.

The previous prime is 18263656711. The next prime is 18263656777. The reversal of 18263656716 is 61765636281.

It is a super-3 number, since 3×18263656716³ (a number of 32 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is not an unprimeable number, because it can be changed into a prime (18263656711) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2629701 + ... + 2636636.

Almost surely, 2^18263656716 is an apocalyptic number.

It is an amenable number.

18263656716 is an abundant number, since it is smaller than the sum of its proper divisors (27005784732).

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

18263656716 is a wasteful number, since it uses less digits than its factorization.

18263656716 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5266378 (or 5266359 counting only the distinct ones).

The product of its digits is 2177280, while the sum is 51.

The spelling of 18263656716 in words is "eighteen billion, two hundred sixty-three million, six hundred fifty-six thousand, seven hundred sixteen".