16545123120103 has 2 divisors, whose sum is σ = 16545123120104. Its totient is φ = 16545123120102.

The previous prime is 16545123120079. The next prime is 16545123120137. The reversal of 16545123120103 is 30102132154561.

It is an a-pointer prime, because the next prime (16545123120137) can be obtained adding 16545123120103 to its sum of digits (34).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 16545123120103 - 2²¹ = 16545121022951 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16545123150103) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8272561560051 + 8272561560052.

It is an arithmetic number, because the mean of its divisors is an integer number (8272561560052).

Almost surely, 2^{16545123120103} is an apocalyptic number.

16545123120103 is a deficient number, since it is larger than the sum of its proper divisors (1).

16545123120103 is an equidigital number, since it uses as much as digits as its factorization.

16545123120103 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 21600, while the sum is 34.

Adding to 16545123120103 its reverse (30102132154561), we get a palindrome (46647255274664).

The spelling of 16545123120103 in words is "sixteen trillion, five hundred forty-five billion, one hundred twenty-three million, one hundred twenty thousand, one hundred three".