455216633621 has 2 divisors, whose sum is σ = 455216633622. Its totient is φ = 455216633620.

The previous prime is 455216633603. The next prime is 455216633779. The reversal of 455216633621 is 126336612554.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 455213343025 + 3290596 = 674695^2 + 1814^2 .

It is a cyclic number.

It is not a de Polignac number, because 455216633621 - 2¹⁰ = 455216632597 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (455216633321) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 227608316810 + 227608316811.

It is an arithmetic number, because the mean of its divisors is an integer number (227608316811).

Almost surely, 2^455216633621 is an apocalyptic number.

It is an amenable number.

455216633621 is a deficient number, since it is larger than the sum of its proper divisors (1).

455216633621 is an equidigital number, since it uses as much as digits as its factorization.

455216633621 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 777600, while the sum is 44.

The spelling of 455216633621 in words is "four hundred fifty-five billion, two hundred sixteen million, six hundred thirty-three thousand, six hundred twenty-one".