16765676217 has 20 divisors (see below), whose sum is σ = 25346779920. Its totient is φ = 11042448984.

The previous prime is 16765676203. The next prime is 16765676227. The reversal of 16765676217 is 71267656761.

16765676217 is a `hidden beast` number, since 1 + 6 + 7 + 6 + 5 + 6 + 7 + 621 + 7 = 666.

It is not a de Polignac number, because 16765676217 - 2⁴ = 16765676201 is a prime.

It is not an unprimeable number, because it can be changed into a prime (16765676227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 1240167 + ... + 1253612.

It is an arithmetic number, because the mean of its divisors is an integer number (1267338996).

Almost surely, 2^16765676217 is an apocalyptic number.

It is an amenable number.

16765676217 is a deficient number, since it is larger than the sum of its proper divisors (8581103703).

16765676217 is an equidigital number, since it uses as much as digits as its factorization.

16765676217 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2493874 (or 2493865 counting only the distinct ones).

The product of its digits is 4445280, while the sum is 54.

The spelling of 16765676217 in words is "sixteen billion, seven hundred sixty-five million, six hundred seventy-six thousand, two hundred seventeen".