16986191503 has 2 divisors, whose sum is σ = 16986191504. Its totient is φ = 16986191502.

The previous prime is 16986191479. The next prime is 16986191531. The reversal of 16986191503 is 30519168961.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16986191503 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16986195503) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8493095751 + 8493095752.

It is an arithmetic number, because the mean of its divisors is an integer number (8493095752).

Almost surely, 2^16986191503 is an apocalyptic number.

16986191503 is a deficient number, since it is larger than the sum of its proper divisors (1).

16986191503 is an equidigital number, since it uses as much as digits as its factorization.

16986191503 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 349920, while the sum is 49.

The spelling of 16986191503 in words is "sixteen billion, nine hundred eighty-six million, one hundred ninety-one thousand, five hundred three".