218183168706463 has 4 divisors (see below), whose sum is σ = 221759941964008. Its totient is φ = 214606395448920.

The previous prime is 218183168706457. The next prime is 218183168706509. The reversal of 218183168706463 is 364607861381812.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 218183168706463 - 2²¹ = 218183166609311 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 218183168706395 and 218183168706404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (218183168706263) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1788386628681 + ... + 1788386628802.

It is an arithmetic number, because the mean of its divisors is an integer number (55439985491002).

Almost surely, 2^{218183168706463} is an apocalyptic number.

218183168706463 is a deficient number, since it is larger than the sum of its proper divisors (3576773257545).

218183168706463 is an equidigital number, since it uses as much as digits as its factorization.

218183168706463 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3576773257544.

The product of its (nonzero) digits is 55738368, while the sum is 64.

The spelling of 218183168706463 in words is "two hundred eighteen trillion, one hundred eighty-three billion, one hundred sixty-eight million, seven hundred six thousand, four hundred sixty-three".