243044545554 has 12 divisors (see below), whose sum is σ = 526596515406. Its totient is φ = 81014848512.

The previous prime is 243044545547. The next prime is 243044545567. The reversal of 243044545554 is 455545440342.

It is a happy number.

243044545554 is a `hidden beast` number, since 2 + 4 + 3 + 0 + 44 + 54 + 5 + 554 = 666.

It can be written as a sum of positive squares in only one way, i.e., 166966218225 + 76078327329 = 408615^2 + 275823^2 .

It is a super-2 number, since 2×243044545554² (a number of 24 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 6751237359 + ... + 6751237394.

Almost surely, 2^243044545554 is an apocalyptic number.

243044545554 is an abundant number, since it is smaller than the sum of its proper divisors (283551969852).

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

243044545554 is a wasteful number, since it uses less digits than its factorization.

243044545554 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13502474761 (or 13502474758 counting only the distinct ones).

The product of its (nonzero) digits is 3840000, while the sum is 45.

Adding to 243044545554 its reverse (455545440342), we get a palindrome (698589985896).

The spelling of 243044545554 in words is "two hundred forty-three billion, forty-four million, five hundred forty-five thousand, five hundred fifty-four".