243201022505 has 16 divisors (see below), whose sum is σ = 336078889344. Its totient is φ = 165493386240.

The previous prime is 243201022501. The next prime is 243201022541. The reversal of 243201022505 is 505220102342.

It is not a de Polignac number, because 243201022505 - 2² = 243201022501 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (243201022501) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 26516792 + ... + 26525961.

It is an arithmetic number, because the mean of its divisors is an integer number (21004930584).

Almost surely, 2^243201022505 is an apocalyptic number.

It is an amenable number.

243201022505 is a deficient number, since it is larger than the sum of its proper divisors (92877866839).

243201022505 is a wasteful number, since it uses less digits than its factorization.

243201022505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53042896.

The product of its (nonzero) digits is 4800, while the sum is 26.

Adding to 243201022505 its reverse (505220102342), we get a palindrome (748421124847).

The spelling of 243201022505 in words is "two hundred forty-three billion, two hundred one million, twenty-two thousand, five hundred five".