455450215189 has 2 divisors, whose sum is σ = 455450215190. Its totient is φ = 455450215188.

The previous prime is 455450215127. The next prime is 455450215243. The reversal of 455450215189 is 981512054554.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 341774698225 + 113675516964 = 584615^2 + 337158^2 .

It is a cyclic number.

It is not a de Polignac number, because 455450215189 - 2⁷ = 455450215061 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (455450215589) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 227725107594 + 227725107595.

It is an arithmetic number, because the mean of its divisors is an integer number (227725107595).

Almost surely, 2^455450215189 is an apocalyptic number.

It is an amenable number.

455450215189 is a deficient number, since it is larger than the sum of its proper divisors (1).

455450215189 is an equidigital number, since it uses as much as digits as its factorization.

455450215189 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1440000, while the sum is 49.

The spelling of 455450215189 in words is "four hundred fifty-five billion, four hundred fifty million, two hundred fifteen thousand, one hundred eighty-nine".