16920018435503 has 2 divisors, whose sum is σ = 16920018435504. Its totient is φ = 16920018435502.

The previous prime is 16920018435491. The next prime is 16920018435533. The reversal of 16920018435503 is 30553481002961.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 16920018435503 - 2¹⁶ = 16920018369967 is a prime.

It is a super-2 number, since 2×16920018435503² (a number of 27 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16920018435533) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8460009217751 + 8460009217752.

It is an arithmetic number, because the mean of its divisors is an integer number (8460009217752).

Almost surely, 2^{16920018435503} is an apocalyptic number.

16920018435503 is a deficient number, since it is larger than the sum of its proper divisors (1).

16920018435503 is an equidigital number, since it uses as much as digits as its factorization.

16920018435503 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 777600, while the sum is 47.

The spelling of 16920018435503 in words is "sixteen trillion, nine hundred twenty billion, eighteen million, four hundred thirty-five thousand, five hundred three".