8455505645 has 54 divisors (see below), whose sum is σ = 11238305406. Its totient is φ = 6105943040.

The previous prime is 8455505629. The next prime is 8455505651. The reversal of 8455505645 is 5465055548.

It can be written as a sum of positive squares in 9 ways, for example, as 3779544484 + 4675961161 = 61478^2 + 68381^2 .

It is not a de Polignac number, because 8455505645 - 2⁴ = 8455505629 is a prime.

It is a super-3 number, since 3×8455505645³ (a number of 31 digits) contains 333 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 8455505645.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 53 ways as a sum of consecutive naturals, for example, 143313626 + ... + 143313684.

Almost surely, 2^8455505645 is an apocalyptic number.

8455505645 is a gapful number since it is divisible by the number (85) formed by its first and last digit.

It is an amenable number.

8455505645 is a deficient number, since it is larger than the sum of its proper divisors (2782799761).

8455505645 is an equidigital number, since it uses as much as digits as its factorization.

8455505645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 239 (or 122 counting only the distinct ones).

The product of its (nonzero) digits is 2400000, while the sum is 47.

The square root of 8455505645 is about 91953.8234387239. The cubic root of 8455505645 is about 2037.2603269589.

The spelling of 8455505645 in words is "eight billion, four hundred fifty-five million, five hundred five thousand, six hundred forty-five".