455820446021887 has 2 divisors, whose sum is σ = 455820446021888. Its totient is φ = 455820446021886.

The previous prime is 455820446021869. The next prime is 455820446021893. The reversal of 455820446021887 is 788120644028554.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-455820446021887 is a prime.

It is a super-3 number, since 3×455820446021887³ (a number of 45 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (455820446021987) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 227910223010943 + 227910223010944.

It is an arithmetic number, because the mean of its divisors is an integer number (227910223010944).

Almost surely, 2^{455820446021887} is an apocalyptic number.

455820446021887 is a deficient number, since it is larger than the sum of its proper divisors (1).

455820446021887 is an equidigital number, since it uses as much as digits as its factorization.

455820446021887 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 137625600, while the sum is 64.

The spelling of 455820446021887 in words is "four hundred fifty-five trillion, eight hundred twenty billion, four hundred forty-six million, twenty-one thousand, eight hundred eighty-seven".