243155555344 has 40 divisors (see below), whose sum is σ = 511348382720. Its totient is φ = 111341962368.

The previous prime is 243155555327. The next prime is 243155555347. The reversal of 243155555344 is 443555551342.

It is a junction number, because it is equal to n+sod(n) for n = 243155555294 and 243155555303.

It is not an unprimeable number, because it can be changed into a prime (243155555347) 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, 4576014 + ... + 4628845.

It is an arithmetic number, because the mean of its divisors is an integer number (12783709568).

Almost surely, 2^243155555344 is an apocalyptic number.

It is an amenable number.

243155555344 is an abundant number, since it is smaller than the sum of its proper divisors (268192827376).

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

243155555344 is a wasteful number, since it uses less digits than its factorization.

243155555344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9205007 (or 9205001 counting only the distinct ones).

The product of its digits is 3600000, while the sum is 46.

The spelling of 243155555344 in words is "two hundred forty-three billion, one hundred fifty-five million, five hundred fifty-five thousand, three hundred forty-four".