20716916909003 has 8 divisors (see below), whose sum is σ = 24180231286272. Its totient is φ = 17379541236456.

The previous prime is 20716916908949. The next prime is 20716916909011. The reversal of 20716916909003 is 30090961961702.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 20716916909003 - 2³⁶ = 20648197432267 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20716916909033) 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 7 ways as a sum of consecutive naturals, for example, 31484675825 + ... + 31484676482.

It is an arithmetic number, because the mean of its divisors is an integer number (3022528910784).

Almost surely, 2^{20716916909003} is an apocalyptic number.

20716916909003 is a deficient number, since it is larger than the sum of its proper divisors (3463314377269).

20716916909003 is an equidigital number, since it uses as much as digits as its factorization.

20716916909003 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62969352361.

The product of its (nonzero) digits is 1102248, while the sum is 53.

Adding to 20716916909003 its sum of digits (53), we get a square (20716916909056 = 4551584²).

The spelling of 20716916909003 in words is "twenty trillion, seven hundred sixteen billion, nine hundred sixteen million, nine hundred nine thousand, three".