243155051444 has 6 divisors (see below), whose sum is σ = 425521340034. Its totient is φ = 121577525720.

The previous prime is 243155051443. The next prime is 243155051449. The reversal of 243155051444 is 444150551342.

It can be written as a sum of positive squares in only one way, i.e., 154433280400 + 88721771044 = 392980^2 + 297862^2 .

It is a junction number, because it is equal to n+sod(n) for n = 243155051398 and 243155051407.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (243155051443) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30394381427 + ... + 30394381434.

It is an arithmetic number, because the mean of its divisors is an integer number (70920223339).

Almost surely, 2^243155051444 is an apocalyptic number.

It is an amenable number.

243155051444 is a deficient number, since it is larger than the sum of its proper divisors (182366288590).

243155051444 is a wasteful number, since it uses less digits than its factorization.

243155051444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60788762865 (or 60788762863 counting only the distinct ones).

The product of its (nonzero) digits is 192000, while the sum is 38.

The spelling of 243155051444 in words is "two hundred forty-three billion, one hundred fifty-five million, fifty-one thousand, four hundred forty-four".