16751230681 has 2 divisors, whose sum is σ = 16751230682. Its totient is φ = 16751230680.

The previous prime is 16751230673. The next prime is 16751230693. The reversal of 16751230681 is 18603215761.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 16512250000 + 238980681 = 128500^2 + 15459^2 .

It is a cyclic number.

It is not a de Polignac number, because 16751230681 - 2³ = 16751230673 is a prime.

It is a super-2 number, since 2×16751230681² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (16751230481) 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 as a sum of consecutive naturals, namely, 8375615340 + 8375615341.

It is an arithmetic number, because the mean of its divisors is an integer number (8375615341).

Almost surely, 2^16751230681 is an apocalyptic number.

It is an amenable number.

16751230681 is a deficient number, since it is larger than the sum of its proper divisors (1).

16751230681 is an equidigital number, since it uses as much as digits as its factorization.

16751230681 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 60480, while the sum is 40.

The spelling of 16751230681 in words is "sixteen billion, seven hundred fifty-one million, two hundred thirty thousand, six hundred eighty-one".