454340140321 has 2 divisors, whose sum is σ = 454340140322. Its totient is φ = 454340140320.

The previous prime is 454340140313. The next prime is 454340140349. The reversal of 454340140321 is 123041043454.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 229057960000 + 225282180321 = 478600^2 + 474639^2 .

It is a cyclic number.

It is not a de Polignac number, because 454340140321 - 2³ = 454340140313 is a prime.

It is not a weakly prime, because it can be changed into another prime (454340140351) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 227170070160 + 227170070161.

It is an arithmetic number, because the mean of its divisors is an integer number (227170070161).

Almost surely, 2^454340140321 is an apocalyptic number.

It is an amenable number.

454340140321 is a deficient number, since it is larger than the sum of its proper divisors (1).

454340140321 is an equidigital number, since it uses as much as digits as its factorization.

454340140321 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 23040, while the sum is 31.

Adding to 454340140321 its reverse (123041043454), we get a palindrome (577381183775).

The spelling of 454340140321 in words is "four hundred fifty-four billion, three hundred forty million, one hundred forty thousand, three hundred twenty-one".