243201251140 has 24 divisors (see below), whose sum is σ = 518345356032. Its totient is φ = 95828552160.

The previous prime is 243201251129. The next prime is 243201251221. The reversal of 243201251140 is 41152102342.

It is a super-2 number, since 2×243201251140² (a number of 24 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 90745396 + ... + 90748075.

It is an arithmetic number, because the mean of its divisors is an integer number (21597723168).

Almost surely, 2^243201251140 is an apocalyptic number.

243201251140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

243201251140 is an abundant number, since it is smaller than the sum of its proper divisors (275144104892).

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

243201251140 is a wasteful number, since it uses less digits than its factorization.

243201251140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 181493547 (or 181493545 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 25.

Adding to 243201251140 its reverse (41152102342), we get a palindrome (284353353482).

The spelling of 243201251140 in words is "two hundred forty-three billion, two hundred one million, two hundred fifty-one thousand, one hundred forty".