243503611126340 has 24 divisors (see below), whose sum is σ = 511862378653080. Its totient is φ = 97305292967168.

The previous prime is 243503611126327. The next prime is 243503611126343. The reversal of 243503611126340 is 43621116305342.

It is a happy number.

243503611126340 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 10443329044996 + 233060282081344 = 3231614^2 + 15266312^2 .

It is not an unprimeable number, because it can be changed into a prime (243503611126343) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6009446945 + ... + 6009487464.

It is an arithmetic number, because the mean of its divisors is an integer number (21327599110545).

Almost surely, 2^{243503611126340} is an apocalyptic number.

243503611126340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

243503611126340 is an abundant number, since it is smaller than the sum of its proper divisors (268358767526740).

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

243503611126340 is a wasteful number, since it uses less digits than its factorization.

243503611126340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12018935431 (or 12018935429 counting only the distinct ones).

The product of its (nonzero) digits is 311040, while the sum is 41.

The spelling of 243503611126340 in words is "two hundred forty-three trillion, five hundred three billion, six hundred eleven million, one hundred twenty-six thousand, three hundred forty".