16515103123 has 2 divisors, whose sum is σ = 16515103124. Its totient is φ = 16515103122.

The previous prime is 16515103117. The next prime is 16515103211. The reversal of 16515103123 is 32130151561.

16515103123 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 16515103123 - 2¹⁷ = 16514972051 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 16515103091 and 16515103100.

It is not a weakly prime, because it can be changed into another prime (16515103823) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8257551561 + 8257551562.

It is an arithmetic number, because the mean of its divisors is an integer number (8257551562).

Almost surely, 2^16515103123 is an apocalyptic number.

16515103123 is a deficient number, since it is larger than the sum of its proper divisors (1).

16515103123 is an equidigital number, since it uses as much as digits as its factorization.

16515103123 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2700, while the sum is 28.

Adding to 16515103123 its reverse (32130151561), we get a palindrome (48645254684).

The spelling of 16515103123 in words is "sixteen billion, five hundred fifteen million, one hundred three thousand, one hundred twenty-three".