243661873348 has 12 divisors (see below), whose sum is σ = 426962780860. Its totient is φ = 121672507392.

The previous prime is 243661873309. The next prime is 243661873387. The reversal of 243661873348 is 843378166342.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (243661873309) and next prime (243661873387).

It can be written as a sum of positive squares in 2 ways, for example, as 58625968384 + 185035904964 = 242128^2 + 430158^2 .

It is a super-2 number, since 2×243661873348² (a number of 24 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 39603861 + ... + 39610012.

Almost surely, 2^243661873348 is an apocalyptic number.

It is an amenable number.

243661873348 is a deficient number, since it is larger than the sum of its proper divisors (183300907512).

243661873348 is a wasteful number, since it uses less digits than its factorization.

243661873348 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79214646 (or 79214644 counting only the distinct ones).

The product of its digits is 13934592, while the sum is 55.

The spelling of 243661873348 in words is "two hundred forty-three billion, six hundred sixty-one million, eight hundred seventy-three thousand, three hundred forty-eight".