451621223524049 has 2 divisors, whose sum is σ = 451621223524050. Its totient is φ = 451621223524048.

The previous prime is 451621223524019. The next prime is 451621223524117. The reversal of 451621223524049 is 940425322126154.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 271367372525824 + 180253850998225 = 16473232^2 + 13425865^2 .

It is a cyclic number.

It is not a de Polignac number, because 451621223524049 - 2¹² = 451621223519953 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 451621223523988 and 451621223524006.

It is not a weakly prime, because it can be changed into another prime (451621223524019) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 225810611762024 + 225810611762025.

It is an arithmetic number, because the mean of its divisors is an integer number (225810611762025).

Almost surely, 2^{451621223524049} is an apocalyptic number.

It is an amenable number.

451621223524049 is a deficient number, since it is larger than the sum of its proper divisors (1).

451621223524049 is an equidigital number, since it uses as much as digits as its factorization.

451621223524049 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4147200, while the sum is 50.

The spelling of 451621223524049 in words is "four hundred fifty-one trillion, six hundred twenty-one billion, two hundred twenty-three million, five hundred twenty-four thousand, forty-nine".