16766423111 has 16 divisors (see below), whose sum is σ = 17938317600. Its totient is φ = 15615894528.

The previous prime is 16766423087. The next prime is 16766423119. The reversal of 16766423111 is 11132466761.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 16766423111 - 2¹⁸ = 16766160967 is a prime.

It is a super-2 number, since 2×16766423111² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16766423119) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 728285 + ... + 750953.

It is an arithmetic number, because the mean of its divisors is an integer number (1121144850).

Almost surely, 2^16766423111 is an apocalyptic number.

16766423111 is a deficient number, since it is larger than the sum of its proper divisors (1171894489).

16766423111 is a wasteful number, since it uses less digits than its factorization.

16766423111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23138.

The product of its digits is 36288, while the sum is 38.

Adding to 16766423111 its reverse (11132466761), we get a palindrome (27898889872).

The spelling of 16766423111 in words is "sixteen billion, seven hundred sixty-six million, four hundred twenty-three thousand, one hundred eleven".