16115111203 has 2 divisors, whose sum is σ = 16115111204. Its totient is φ = 16115111202.

The previous prime is 16115111113. The next prime is 16115111209. The reversal of 16115111203 is 30211151161.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 16115111203 - 2⁹ = 16115110691 is a prime.

It is a super-2 number, since 2×16115111203² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (16115111209) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8057555601 + 8057555602.

It is an arithmetic number, because the mean of its divisors is an integer number (8057555602).

Almost surely, 2^16115111203 is an apocalyptic number.

16115111203 is a deficient number, since it is larger than the sum of its proper divisors (1).

16115111203 is an equidigital number, since it uses as much as digits as its factorization.

16115111203 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 180, while the sum is 22.

Adding to 16115111203 its reverse (30211151161), we get a palindrome (46326262364).

The spelling of 16115111203 in words is "sixteen billion, one hundred fifteen million, one hundred eleven thousand, two hundred three".