16728012907231 has 2 divisors, whose sum is σ = 16728012907232. Its totient is φ = 16728012907230.

The previous prime is 16728012907217. The next prime is 16728012907237. The reversal of 16728012907231 is 13270921082761.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 16728012907231 - 2⁹ = 16728012906719 is a prime.

It is a super-2 number, since 2×16728012907231² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16728012907237) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8364006453615 + 8364006453616.

It is an arithmetic number, because the mean of its divisors is an integer number (8364006453616).

Almost surely, 2^{16728012907231} is an apocalyptic number.

16728012907231 is a deficient number, since it is larger than the sum of its proper divisors (1).

16728012907231 is an equidigital number, since it uses as much as digits as its factorization.

16728012907231 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 508032, while the sum is 49.

Adding to 16728012907231 its reverse (13270921082761), we get a palindrome (29998933989992).

The spelling of 16728012907231 in words is "sixteen trillion, seven hundred twenty-eight billion, twelve million, nine hundred seven thousand, two hundred thirty-one".