240555200523421 has 16 divisors (see below), whose sum is σ = 277450997612800. Its totient is φ = 204292212334848.

The previous prime is 240555200523377. The next prime is 240555200523437. The reversal of 240555200523421 is 124325002555042.

It is a cyclic number.

It is not a de Polignac number, because 240555200523421 - 2¹¹ = 240555200521373 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (240555200529421) 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, 19949845 + ... + 29649733.

It is an arithmetic number, because the mean of its divisors is an integer number (17340687350800).

Almost surely, 2^{240555200523421} is an apocalyptic number.

It is an amenable number.

240555200523421 is a deficient number, since it is larger than the sum of its proper divisors (36895797089379).

240555200523421 is a wasteful number, since it uses less digits than its factorization.

240555200523421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9732508.

The product of its (nonzero) digits is 480000, while the sum is 40.

The spelling of 240555200523421 in words is "two hundred forty trillion, five hundred fifty-five billion, two hundred million, five hundred twenty-three thousand, four hundred twenty-one".