243155055546 has 80 divisors (see below), whose sum is σ = 602617319304. Its totient is φ = 72794837376.

The previous prime is 243155055529. The next prime is 243155055553. The reversal of 243155055546 is 645550551342.

243155055546 is a `hidden beast` number, since 2 + 4 + 3 + 1 + 5 + 50 + 55 + 546 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 242102377521 + 1052678025 = 492039^2 + 32445^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 1482325 + ... + 1638168.

Almost surely, 2^243155055546 is an apocalyptic number.

243155055546 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

243155055546 is an abundant number, since it is smaller than the sum of its proper divisors (359462263758).

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

243155055546 is a wasteful number, since it uses less digits than its factorization.

243155055546 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3120557 (or 3120548 counting only the distinct ones).

The product of its (nonzero) digits is 1800000, while the sum is 45.

The spelling of 243155055546 in words is "two hundred forty-three billion, one hundred fifty-five million, fifty-five thousand, five hundred forty-six".