243812218342 has 64 divisors (see below), whose sum is σ = 489753792000. Its totient is φ = 89992153440.

The previous prime is 243812218291. The next prime is 243812218343.

243812218342 is nontrivially palindromic in base 10.

It is a hoax number, since the sum of its digits (40) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 243812218295 and 243812218304.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (243812218343) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 706893 + ... + 993640.

It is an arithmetic number, because the mean of its divisors is an integer number (7652403000).

Almost surely, 2^243812218342 is an apocalyptic number.

243812218342 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

243812218342 is an abundant number, since it is smaller than the sum of its proper divisors (245941573658).

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

243812218342 is a wasteful number, since it uses less digits than its factorization.

243812218342 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1700586 (or 1700572 counting only the distinct ones).

The product of its digits is 147456, while the sum is 40.

The spelling of 243812218342 in words is "two hundred forty-three billion, eight hundred twelve million, two hundred eighteen thousand, three hundred forty-two".