243043554452 has 24 divisors (see below), whose sum is σ = 436786682472. Its totient is φ = 118262144000.

The previous prime is 243043554389. The next prime is 243043554473. The reversal of 243043554452 is 254455340342.

It can be written as a sum of positive squares in 4 ways, for example, as 23386361476 + 219657192976 = 152926^2 + 468676^2 .

It is a Harshad number since it is a multiple of its sum of digits (41).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1782083 + ... + 1913610.

It is an arithmetic number, because the mean of its divisors is an integer number (18199445103).

Almost surely, 2^243043554452 is an apocalyptic number.

It is an amenable number.

243043554452 is a deficient number, since it is larger than the sum of its proper divisors (193743128020).

243043554452 is a wasteful number, since it uses less digits than its factorization.

243043554452 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3696139 (or 3696137 counting only the distinct ones).

The product of its (nonzero) digits is 1152000, while the sum is 41.

Adding to 243043554452 its reverse (254455340342), we get a palindrome (497498894794).

The spelling of 243043554452 in words is "two hundred forty-three billion, forty-three million, five hundred fifty-four thousand, four hundred fifty-two".