16728537503 has 2 divisors, whose sum is σ = 16728537504. Its totient is φ = 16728537502.

The previous prime is 16728537467. The next prime is 16728537521. The reversal of 16728537503 is 30573582761.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 16728537503 - 2⁶ = 16728537439 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16728537563) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8364268751 + 8364268752.

It is an arithmetic number, because the mean of its divisors is an integer number (8364268752).

Almost surely, 2^16728537503 is an apocalyptic number.

16728537503 is a deficient number, since it is larger than the sum of its proper divisors (1).

16728537503 is an equidigital number, since it uses as much as digits as its factorization.

16728537503 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1058400, while the sum is 47.

The spelling of 16728537503 in words is "sixteen billion, seven hundred twenty-eight million, five hundred thirty-seven thousand, five hundred three".