4519819466645 has 12 divisors (see below), whose sum is σ = 6309299010924. Its totient is φ = 3099304776960.

The previous prime is 4519819466623. The next prime is 4519819466647. The reversal of 4519819466645 is 5466649189154.

It can be written as a sum of positive squares in 2 ways, for example, as 2183638665796 + 2336180800849 = 1477714^2 + 1528457^2 .

It is not a de Polignac number, because 4519819466645 - 2¹⁰ = 4519819465621 is a prime.

It is a super-2 number, since 2×4519819466645² (a number of 26 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4519819466647) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9224121116 + ... + 9224121605.

It is an arithmetic number, because the mean of its divisors is an integer number (525774917577).

Almost surely, 2^{4519819466645} is an apocalyptic number.

It is an amenable number.

4519819466645 is a deficient number, since it is larger than the sum of its proper divisors (1789479544279).

4519819466645 is a wasteful number, since it uses less digits than its factorization.

4519819466645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18448242740 (or 18448242733 counting only the distinct ones).

The product of its digits is 223948800, while the sum is 68.

The spelling of 4519819466645 in words is "four trillion, five hundred nineteen billion, eight hundred nineteen million, four hundred sixty-six thousand, six hundred forty-five".