16620719503 has 2 divisors, whose sum is σ = 16620719504. Its totient is φ = 16620719502.

The previous prime is 16620719459. The next prime is 16620719513. The reversal of 16620719503 is 30591702661.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 16620719503 - 2²⁹ = 16083848591 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16620719513) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8310359751 + 8310359752.

It is an arithmetic number, because the mean of its divisors is an integer number (8310359752).

Almost surely, 2^16620719503 is an apocalyptic number.

16620719503 is a deficient number, since it is larger than the sum of its proper divisors (1).

16620719503 is an equidigital number, since it uses as much as digits as its factorization.

16620719503 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 68040, while the sum is 40.

The spelling of 16620719503 in words is "sixteen billion, six hundred twenty million, seven hundred nineteen thousand, five hundred three".