1005663434045 has 4 divisors (see below), whose sum is σ = 1206796120860. Its totient is φ = 804530747232.

The previous prime is 1005663433993. The next prime is 1005663434053. The reversal of 1005663434045 is 5404343665001.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 758651452036 + 247011982009 = 871006^2 + 497003^2 .

It is a cyclic number.

It is not a de Polignac number, because 1005663434045 - 2³⁰ = 1004589692221 is a prime.

It is a super-2 number, since 2×1005663434045² (a number of 25 digits) contains 22 as substring.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1005663433993 and 1005663434011.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 100566343400 + ... + 100566343409.

It is an arithmetic number, because the mean of its divisors is an integer number (301699030215).

Almost surely, 2^{1005663434045} is an apocalyptic number.

It is an amenable number.

1005663434045 is a deficient number, since it is larger than the sum of its proper divisors (201132686815).

1005663434045 is an equidigital number, since it uses as much as digits as its factorization.

1005663434045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 201132686814.

The product of its (nonzero) digits is 518400, while the sum is 41.

The spelling of 1005663434045 in words is "one trillion, five billion, six hundred sixty-three million, four hundred thirty-four thousand, forty-five".