218735264252 has 24 divisors (see below), whose sum is σ = 383476665600. Its totient is φ = 109170630576.

The previous prime is 218735264179. The next prime is 218735264257. The reversal of 218735264252 is 252462537812.

It is a junction number, because it is equal to n+sod(n) for n = 218735264197 and 218735264206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (218735264257) 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, 7632983 + ... + 7661585.

It is an arithmetic number, because the mean of its divisors is an integer number (15978194400).

Almost surely, 2^218735264252 is an apocalyptic number.

It is an amenable number.

218735264252 is a deficient number, since it is larger than the sum of its proper divisors (164741401348).

218735264252 is a wasteful number, since it uses less digits than its factorization.

218735264252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31985 (or 31983 counting only the distinct ones).

The product of its digits is 1612800, while the sum is 47.

The spelling of 218735264252 in words is "two hundred eighteen billion, seven hundred thirty-five million, two hundred sixty-four thousand, two hundred fifty-two".