16758667969 has 2 divisors, whose sum is σ = 16758667970. Its totient is φ = 16758667968.

The previous prime is 16758667957. The next prime is 16758667993. The reversal of 16758667969 is 96976685761.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9892888369 + 6865779600 = 99463^2 + 82860^2 .

It is a cyclic number.

It is not a de Polignac number, because 16758667969 - 2⁷ = 16758667841 is a prime.

It is a super-2 number, since 2×16758667969² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 16758667898 and 16758667907.

It is not a weakly prime, because it can be changed into another prime (16758667669) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8379333984 + 8379333985.

It is an arithmetic number, because the mean of its divisors is an integer number (8379333985).

Almost surely, 2^16758667969 is an apocalyptic number.

It is an amenable number.

16758667969 is a deficient number, since it is larger than the sum of its proper divisors (1).

16758667969 is an equidigital number, since it uses as much as digits as its factorization.

16758667969 is an evil number, because the sum of its binary digits is even.

The product of its digits is 205752960, while the sum is 70.

The spelling of 16758667969 in words is "sixteen billion, seven hundred fifty-eight million, six hundred sixty-seven thousand, nine hundred sixty-nine".