469531123218 has 12 divisors (see below), whose sum is σ = 1017317433678. Its totient is φ = 156510374400.

The previous prime is 469531123213. The next prime is 469531123231. The reversal of 469531123218 is 812321135964.

469531123218 is a `hidden beast` number, since 4 + 6 + 9 + 5 + 311 + 2 + 321 + 8 = 666.

It can be written as a sum of positive squares in only one way, i.e., 401110688889 + 68420434329 = 633333^2 + 261573^2 .

It is not an unprimeable number, because it can be changed into a prime (469531123213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 13042531183 + ... + 13042531218.

Almost surely, 2^469531123218 is an apocalyptic number.

469531123218 is an abundant number, since it is smaller than the sum of its proper divisors (547786310460).

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

469531123218 is a wasteful number, since it uses less digits than its factorization.

469531123218 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26085062409 (or 26085062406 counting only the distinct ones).

The product of its digits is 311040, while the sum is 45.

The spelling of 469531123218 in words is "four hundred sixty-nine billion, five hundred thirty-one million, one hundred twenty-three thousand, two hundred eighteen".