1005503213405 has 8 divisors (see below), whose sum is σ = 1206609247584. Its totient is φ = 804398976400.

The previous prime is 1005503213369. The next prime is 1005503213413. The reversal of 1005503213405 is 5043123055001.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1005503213405 - 2²⁸ = 1005234777949 is a prime.

It is a super-2 number, since 2×1005503213405² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 1870010 + ... + 2346900.

It is an arithmetic number, because the mean of its divisors is an integer number (150826155948).

Almost surely, 2^{1005503213405} is an apocalyptic number.

It is an amenable number.

1005503213405 is a deficient number, since it is larger than the sum of its proper divisors (201106034179).

1005503213405 is an equidigital number, since it uses as much as digits as its factorization.

1005503213405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 898587.

The product of its (nonzero) digits is 9000, while the sum is 29.

Adding to 1005503213405 its reverse (5043123055001), we get a palindrome (6048626268406).

The spelling of 1005503213405 in words is "one trillion, five billion, five hundred three million, two hundred thirteen thousand, four hundred five".