1043223371605 has 4 divisors (see below), whose sum is σ = 1251868045932. Its totient is φ = 834578697280.

The previous prime is 1043223371587. The next prime is 1043223371621. The reversal of 1043223371605 is 5061733223401.

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 643322701476 + 399900670129 = 802074^2 + 632377^2 .

It is not a de Polignac number, because 1043223371605 - 2²⁹ = 1042686500693 is a prime.

It is a Duffinian number.

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, 104322337156 + ... + 104322337165.

It is an arithmetic number, because the mean of its divisors is an integer number (312967011483).

Almost surely, 2^{1043223371605} is an apocalyptic number.

It is an amenable number.

1043223371605 is a deficient number, since it is larger than the sum of its proper divisors (208644674327).

1043223371605 is an equidigital number, since it uses as much as digits as its factorization.

1043223371605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 208644674326.

The product of its (nonzero) digits is 90720, while the sum is 37.

The spelling of 1043223371605 in words is "one trillion, forty-three billion, two hundred twenty-three million, three hundred seventy-one thousand, six hundred five".