1601603144303 has 4 divisors (see below), whose sum is σ = 1631822071608. Its totient is φ = 1571384217000.

The previous prime is 1601603144269. The next prime is 1601603144321. The reversal of 1601603144303 is 3034413061061.

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

It is a cyclic number.

It is not a de Polignac number, because 1601603144303 - 2¹⁴ = 1601603127919 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1601603144303.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1601603144333) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15109463573 + ... + 15109463678.

It is an arithmetic number, because the mean of its divisors is an integer number (407955517902).

Almost surely, 2^{1601603144303} is an apocalyptic number.

1601603144303 is a deficient number, since it is larger than the sum of its proper divisors (30218927305).

1601603144303 is an equidigital number, since it uses as much as digits as its factorization.

1601603144303 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30218927304.

The product of its (nonzero) digits is 15552, while the sum is 32.

The spelling of 1601603144303 in words is "one trillion, six hundred one billion, six hundred three million, one hundred forty-four thousand, three hundred three".