243400145100 has 216 divisors, whose sum is σ = 841358180880. Its totient is φ = 54130567680.

The previous prime is 243400145089. The next prime is 243400145101. The reversal of 243400145100 is 1541004342.

It is not an unprimeable number, because it can be changed into a prime (243400145101) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 320146 + ... + 767654.

Almost surely, 2^243400145100 is an apocalyptic number.

243400145100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 243400145100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (420679090440).

243400145100 is an abundant number, since it is smaller than the sum of its proper divisors (597958035780).

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

243400145100 is a wasteful number, since it uses less digits than its factorization.

243400145100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 447577 (or 447563 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 24.

Adding to 243400145100 its reverse (1541004342), we get a palindrome (244941149442).

The spelling of 243400145100 in words is "two hundred forty-three billion, four hundred million, one hundred forty-five thousand, one hundred".