240054524336821 has 2 divisors, whose sum is σ = 240054524336822. Its totient is φ = 240054524336820.

The previous prime is 240054524336723. The next prime is 240054524336929. The reversal of 240054524336821 is 128633425450042.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 131487272904100 + 108567251432721 = 11466790^2 + 10419561^2 .

It is a cyclic number.

It is not a de Polignac number, because 240054524336821 - 2¹¹ = 240054524334773 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (240054524336021) 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 as a sum of consecutive naturals, namely, 120027262168410 + 120027262168411.

It is an arithmetic number, because the mean of its divisors is an integer number (120027262168411).

Almost surely, 2^{240054524336821} is an apocalyptic number.

It is an amenable number.

240054524336821 is a deficient number, since it is larger than the sum of its proper divisors (1).

240054524336821 is an equidigital number, since it uses as much as digits as its factorization.

240054524336821 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5529600, while the sum is 49.

Adding to 240054524336821 its reverse (128633425450042), we get a palindrome (368687949786863).

The spelling of 240054524336821 in words is "two hundred forty trillion, fifty-four billion, five hundred twenty-four million, three hundred thirty-six thousand, eight hundred twenty-one".