243622940450 has 90 divisors (see below), whose sum is σ = 475044780549. Its totient is φ = 92955259040.

The previous prime is 243622940423. The next prime is 243622940453. The reversal of 243622940450 is 54049226342.

It can be written as a sum of positive squares in 8 ways, for example, as 2106718201 + 241516222249 = 45899^2 + 491443^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=349015.

It is a super-2 number, since 2×243622940450² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 243622940398 and 243622940407.

It is not an unprimeable number, because it can be changed into a prime (243622940453) by changing a digit.

It is a polite number, since it can be written in 44 ways as a sum of consecutive naturals, for example, 2935216109 + ... + 2935216191.

Almost surely, 2^243622940450 is an apocalyptic number.

243622940450 is a deficient number, since it is larger than the sum of its proper divisors (231421840099).

243622940450 is an frugal number, since it uses more digits than its factorization.

243622940450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 294 (or 119 counting only the distinct ones).

The product of its (nonzero) digits is 414720, while the sum is 41.

The spelling of 243622940450 in words is "two hundred forty-three billion, six hundred twenty-two million, nine hundred forty thousand, four hundred fifty".