8309945364503 has 16 divisors (see below), whose sum is σ = 8880271092000. Its totient is φ = 7748688448512.

The previous prime is 8309945364473. The next prime is 8309945364529. The reversal of 8309945364503 is 3054635499038.

It is a cyclic number.

It is not a de Polignac number, because 8309945364503 - 2¹⁸ = 8309945102359 is a prime.

It is a super-2 number, since 2×8309945364503² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8309945364593) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21467888 + ... + 21851546.

It is an arithmetic number, because the mean of its divisors is an integer number (555016943250).

Almost surely, 2^{8309945364503} is an apocalyptic number.

8309945364503 is a deficient number, since it is larger than the sum of its proper divisors (570325727497).

8309945364503 is a wasteful number, since it uses less digits than its factorization.

8309945364503 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 395474.

The product of its (nonzero) digits is 41990400, while the sum is 59.

The spelling of 8309945364503 in words is "eight trillion, three hundred nine billion, nine hundred forty-five million, three hundred sixty-four thousand, five hundred three".