243155041400 has 48 divisors (see below), whose sum is σ = 584829811800. Its totient is φ = 93908151680.

The previous prime is 243155041397. The next prime is 243155041411. The reversal of 243155041400 is 4140551342.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is a congruent number.

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, 20955842 + ... + 20967441.

Almost surely, 2^243155041400 is an apocalyptic number.

243155041400 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

243155041400 is an abundant number, since it is smaller than the sum of its proper divisors (341674770400).

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

243155041400 is a wasteful number, since it uses less digits than its factorization.

243155041400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41923328 (or 41923319 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 29.

Adding to 243155041400 its reverse (4140551342), we get a palindrome (247295592742).

The spelling of 243155041400 in words is "two hundred forty-three billion, one hundred fifty-five million, forty-one thousand, four hundred".