342345005521 has 2 divisors, whose sum is σ = 342345005522. Its totient is φ = 342345005520.

The previous prime is 342345005507. The next prime is 342345005573. The reversal of 342345005521 is 125500543243.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 227491795521 + 114853210000 = 476961^2 + 338900^2 .

It is a cyclic number.

It is not a de Polignac number, because 342345005521 - 2³⁵ = 307985267153 is a prime.

It is not a weakly prime, because it can be changed into another prime (342345005501) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 171172502760 + 171172502761.

It is an arithmetic number, because the mean of its divisors is an integer number (171172502761).

Almost surely, 2^342345005521 is an apocalyptic number.

It is an amenable number.

342345005521 is a deficient number, since it is larger than the sum of its proper divisors (1).

342345005521 is an equidigital number, since it uses as much as digits as its factorization.

342345005521 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 72000, while the sum is 34.

Adding to 342345005521 its reverse (125500543243), we get a palindrome (467845548764).

The spelling of 342345005521 in words is "three hundred forty-two billion, three hundred forty-five million, five thousand, five hundred twenty-one".