326503006503 has 4 divisors (see below), whose sum is σ = 435337342008. Its totient is φ = 217668671000.

The previous prime is 326503006499. The next prime is 326503006619. The reversal of 326503006503 is 305600305623.

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 326503006503 - 2² = 326503006499 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (326503006303) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 54417167748 + ... + 54417167753.

It is an arithmetic number, because the mean of its divisors is an integer number (108834335502).

Almost surely, 2^326503006503 is an apocalyptic number.

326503006503 is a deficient number, since it is larger than the sum of its proper divisors (108834335505).

326503006503 is a wasteful number, since it uses less digits than its factorization.

326503006503 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 108834335504.

The product of its (nonzero) digits is 48600, while the sum is 33.

The spelling of 326503006503 in words is "three hundred twenty-six billion, five hundred three million, six thousand, five hundred three".