216382704718503 has 8 divisors (see below), whose sum is σ = 303695024166400. Its totient is φ = 136662760874808.

The previous prime is 216382704718489. The next prime is 216382704718511. The reversal of 216382704718503 is 305817407283612.

It is a happy number.

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

It is a de Polignac number, because none of the positive numbers 2^k-216382704718503 is a prime.

It is a super-2 number, since 2×216382704718503² (a number of 29 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (57), and also a Moran number because the ratio is a prime number: 3796187802079 = 216382704718503 / (2 + 1 + 6 + 3 + 8 + 2 + 7 + 0 + 4 + 7 + 1 + 8 + 5 + 0 + 3).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (216382704718303) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1898093900983 + ... + 1898093901096.

It is an arithmetic number, because the mean of its divisors is an integer number (37961878020800).

Almost surely, 2^{216382704718503} is an apocalyptic number.

216382704718503 is a deficient number, since it is larger than the sum of its proper divisors (87312319447897).

216382704718503 is a wasteful number, since it uses less digits than its factorization.

216382704718503 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3796187802101.

The product of its (nonzero) digits is 13547520, while the sum is 57.

The spelling of 216382704718503 in words is "two hundred sixteen trillion, three hundred eighty-two billion, seven hundred four million, seven hundred eighteen thousand, five hundred three".