243734145144 has 64 divisors (see below), whose sum is σ = 696593187840. Its totient is φ = 69617335680.

The previous prime is 243734145131. The next prime is 243734145163. The reversal of 243734145144 is 441541437342.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a junction number, because it is equal to n+sod(n) for n = 243734145096 and 243734145105.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 344634 + ... + 778614.

It is an arithmetic number, because the mean of its divisors is an integer number (10884268560).

Almost surely, 2^243734145144 is an apocalyptic number.

243734145144 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

243734145144 is an abundant number, since it is smaller than the sum of its proper divisors (452859042696).

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

243734145144 is a wasteful number, since it uses less digits than its factorization.

243734145144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 437340 (or 437336 counting only the distinct ones).

The product of its digits is 645120, while the sum is 42.

The spelling of 243734145144 in words is "two hundred forty-three billion, seven hundred thirty-four million, one hundred forty-five thousand, one hundred forty-four".