243121250050 has 24 divisors (see below), whose sum is σ = 516806315136. Its totient is φ = 83355857040.

The previous prime is 243121250033. The next prime is 243121250063. The reversal of 243121250050 is 50052121342.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a junction number, because it is equal to n+sod(n) for n = 243121249997 and 243121250024.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 347315722 + ... + 347316421.

It is an arithmetic number, because the mean of its divisors is an integer number (21533596464).

Almost surely, 2^243121250050 is an apocalyptic number.

243121250050 is an abundant number, since it is smaller than the sum of its proper divisors (273685065086).

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

243121250050 is a wasteful number, since it uses less digits than its factorization.

243121250050 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 694632162 (or 694632157 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 25.

Adding to 243121250050 its reverse (50052121342), we get a palindrome (293173371392).

The spelling of 243121250050 in words is "two hundred forty-three billion, one hundred twenty-one million, two hundred fifty thousand, fifty".