1005254334013 has 4 divisors (see below), whose sum is σ = 1016549326620. Its totient is φ = 993959341408.

The previous prime is 1005254334001. The next prime is 1005254334023. The reversal of 1005254334013 is 3104334525001.

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 538870510084 + 466383823929 = 734078^2 + 682923^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1005254334013 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1005254334023) 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 3 ways as a sum of consecutive naturals, for example, 5647496170 + ... + 5647496347.

It is an arithmetic number, because the mean of its divisors is an integer number (254137331655).

Almost surely, 2^{1005254334013} is an apocalyptic number.

It is an amenable number.

1005254334013 is a deficient number, since it is larger than the sum of its proper divisors (11294992607).

1005254334013 is an equidigital number, since it uses as much as digits as its factorization.

1005254334013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11294992606.

The product of its (nonzero) digits is 21600, while the sum is 31.

Adding to 1005254334013 its reverse (3104334525001), we get a palindrome (4109588859014).

The spelling of 1005254334013 in words is "one trillion, five billion, two hundred fifty-four million, three hundred thirty-four thousand, thirteen".