243122045553 has 24 divisors (see below), whose sum is σ = 355221734400. Its totient is φ = 160215257664.

The previous prime is 243122045533. The next prime is 243122045557. The reversal of 243122045553 is 355540221342.

243122045553 is a `hidden beast` number, since 2 + 43 + 1 + 2 + 20 + 45 + 553 = 666.

It is not a de Polignac number, because 243122045553 - 2²⁰ = 243120996977 is a prime.

It is not an unprimeable number, because it can be changed into a prime (243122045557) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2944608 + ... + 3026046.

It is an arithmetic number, because the mean of its divisors is an integer number (14800905600).

Almost surely, 2^243122045553 is an apocalyptic number.

It is an amenable number.

243122045553 is a deficient number, since it is larger than the sum of its proper divisors (112099688847).

243122045553 is a wasteful number, since it uses less digits than its factorization.

243122045553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85261 (or 85258 counting only the distinct ones).

The product of its (nonzero) digits is 144000, while the sum is 36.

Adding to 243122045553 its reverse (355540221342), we get a palindrome (598662266895).

The spelling of 243122045553 in words is "two hundred forty-three billion, one hundred twenty-two million, forty-five thousand, five hundred fifty-three".