243045423040 has 56 divisors (see below), whose sum is σ = 661430764512. Its totient is φ = 83329858560.

The previous prime is 243045422989. The next prime is 243045423067. The reversal of 243045423040 is 40324540342.

It is a tau number, because it is divible by the number of its divisors (56).

It is a junction number, because it is equal to n+sod(n) for n = 243045422993 and 243045423011.

It is a congruent number.

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, 54248971 + ... + 54253450.

It is an arithmetic number, because the mean of its divisors is an integer number (11811263652).

Almost surely, 2^243045423040 is an apocalyptic number.

243045423040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

243045423040 is an abundant number, since it is smaller than the sum of its proper divisors (418385341472).

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

243045423040 is a wasteful number, since it uses less digits than its factorization.

243045423040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 108502445 (or 108502435 counting only the distinct ones).

The product of its (nonzero) digits is 46080, while the sum is 31.

Adding to 243045423040 its reverse (40324540342), we get a palindrome (283369963382).

The spelling of 243045423040 in words is "two hundred forty-three billion, forty-five million, four hundred twenty-three thousand, forty".