16516420103 has 2 divisors, whose sum is σ = 16516420104. Its totient is φ = 16516420102.

The previous prime is 16516420049. The next prime is 16516420117. The reversal of 16516420103 is 30102461561.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 16516420103 - 2¹⁰ = 16516419079 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16516420183) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8258210051 + 8258210052.

It is an arithmetic number, because the mean of its divisors is an integer number (8258210052).

Almost surely, 2^16516420103 is an apocalyptic number.

16516420103 is a deficient number, since it is larger than the sum of its proper divisors (1).

16516420103 is an equidigital number, since it uses as much as digits as its factorization.

16516420103 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4320, while the sum is 29.

Adding to 16516420103 its reverse (30102461561), we get a palindrome (46618881664).

The spelling of 16516420103 in words is "sixteen billion, five hundred sixteen million, four hundred twenty thousand, one hundred three".