456011521321 has 2 divisors, whose sum is σ = 456011521322. Its totient is φ = 456011521320.

The previous prime is 456011521319. The next prime is 456011521367. The reversal of 456011521321 is 123125110654.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 455955810025 + 55711296 = 675245^2 + 7464^2 .

It is a cyclic number.

It is not a de Polignac number, because 456011521321 - 2¹ = 456011521319 is a prime.

Together with 456011521319, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (456011501321) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 228005760660 + 228005760661.

It is an arithmetic number, because the mean of its divisors is an integer number (228005760661).

Almost surely, 2^456011521321 is an apocalyptic number.

It is an amenable number.

456011521321 is a deficient number, since it is larger than the sum of its proper divisors (1).

456011521321 is an equidigital number, since it uses as much as digits as its factorization.

456011521321 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7200, while the sum is 31.

Adding to 456011521321 its reverse (123125110654), we get a palindrome (579136631975).

The spelling of 456011521321 in words is "four hundred fifty-six billion, eleven million, five hundred twenty-one thousand, three hundred twenty-one".