240553155434221 has 16 divisors (see below), whose sum is σ = 275991692497920. Its totient is φ = 205383092244480.

The previous prime is 240553155434197. The next prime is 240553155434231. The reversal of 240553155434221 is 122434551355042.

It is a cyclic number.

It is not a de Polignac number, because 240553155434221 - 2²³ = 240553147045613 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (240553155434231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 125176095 + ... + 127083283.

It is an arithmetic number, because the mean of its divisors is an integer number (17249480781120).

Almost surely, 2^{240553155434221} is an apocalyptic number.

It is an amenable number.

240553155434221 is a deficient number, since it is larger than the sum of its proper divisors (35438537063699).

240553155434221 is a wasteful number, since it uses less digits than its factorization.

240553155434221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1977564.

The product of its (nonzero) digits is 2880000, while the sum is 46.

The spelling of 240553155434221 in words is "two hundred forty trillion, five hundred fifty-three billion, one hundred fifty-five million, four hundred thirty-four thousand, two hundred twenty-one".