1006303520623 has 4 divisors (see below), whose sum is σ = 1010312698248. Its totient is φ = 1002294343000.

The previous prime is 1006303520581. The next prime is 1006303520641. The reversal of 1006303520623 is 3260253036001.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1006303520623 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 (1006303520923) 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, 2004588436 + ... + 2004588937.

It is an arithmetic number, because the mean of its divisors is an integer number (252578174562).

Almost surely, 2^{1006303520623} is an apocalyptic number.

1006303520623 is a deficient number, since it is larger than the sum of its proper divisors (4009177625).

1006303520623 is an equidigital number, since it uses as much as digits as its factorization.

1006303520623 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4009177624.

The product of its (nonzero) digits is 19440, while the sum is 31.

Adding to 1006303520623 its reverse (3260253036001), we get a palindrome (4266556556624).

The spelling of 1006303520623 in words is "one trillion, six billion, three hundred three million, five hundred twenty thousand, six hundred twenty-three".