16990782533 has 2 divisors, whose sum is σ = 16990782534. Its totient is φ = 16990782532.

The previous prime is 16990782449. The next prime is 16990782539. The reversal of 16990782533 is 33528709961.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 16890121444 + 100661089 = 129962^2 + 10033^2 .

It is an emirp because it is prime and its reverse (33528709961) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16990782533 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16990782539) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8495391266 + 8495391267.

It is an arithmetic number, because the mean of its divisors is an integer number (8495391267).

Almost surely, 2^16990782533 is an apocalyptic number.

It is an amenable number.

16990782533 is a deficient number, since it is larger than the sum of its proper divisors (1).

16990782533 is an equidigital number, since it uses as much as digits as its factorization.

16990782533 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2449440, while the sum is 53.

The spelling of 16990782533 in words is "sixteen billion, nine hundred ninety million, seven hundred eighty-two thousand, five hundred thirty-three".