16764311217 has 16 divisors (see below), whose sum is σ = 22456541952. Its totient is φ = 11124224640.

The previous prime is 16764311177. The next prime is 16764311237. The reversal of 16764311217 is 71211346761.

It is a happy number.

It is not a de Polignac number, because 16764311217 - 2¹⁸ = 16764049073 is a prime.

It is not an unprimeable number, because it can be changed into a prime (16764311237) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 882463 + ... + 901259.

It is an arithmetic number, because the mean of its divisors is an integer number (1403533872).

Almost surely, 2^16764311217 is an apocalyptic number.

It is an amenable number.

16764311217 is a deficient number, since it is larger than the sum of its proper divisors (5692230735).

16764311217 is a wasteful number, since it uses less digits than its factorization.

16764311217 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20168.

The product of its digits is 42336, while the sum is 39.

Adding to 16764311217 its reverse (71211346761), we get a palindrome (87975657978).

The spelling of 16764311217 in words is "sixteen billion, seven hundred sixty-four million, three hundred eleven thousand, two hundred seventeen".