243354405450 has 48 divisors (see below), whose sum is σ = 649943463456. Its totient is φ = 59902622400.

The previous prime is 243354405443. The next prime is 243354405451. The reversal of 243354405450 is 54504453342.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a junction number, because it is equal to n+sod(n) for n = 243354405399 and 243354405408.

It is not an unprimeable number, because it can be changed into a prime (243354405451) 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, 62396616 + ... + 62400515.

It is an arithmetic number, because the mean of its divisors is an integer number (13540488822).

Almost surely, 2^243354405450 is an apocalyptic number.

243354405450 is an abundant number, since it is smaller than the sum of its proper divisors (406589058006).

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

243354405450 is a wasteful number, since it uses less digits than its factorization.

243354405450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 124797159 (or 124797154 counting only the distinct ones).

The product of its (nonzero) digits is 576000, while the sum is 39.

Adding to 243354405450 its reverse (54504453342), we get a palindrome (297858858792).

The spelling of 243354405450 in words is "two hundred forty-three billion, three hundred fifty-four million, four hundred five thousand, four hundred fifty".