16487165729 has 2 divisors, whose sum is σ = 16487165730. Its totient is φ = 16487165728.

The previous prime is 16487165711. The next prime is 16487165741. The reversal of 16487165729 is 92756178461.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9568752400 + 6918413329 = 97820^2 + 83177^2 .

It is a cyclic number.

It is not a de Polignac number, because 16487165729 - 2¹² = 16487161633 is a prime.

It is not a weakly prime, because it can be changed into another prime (16487165789) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8243582864 + 8243582865.

It is an arithmetic number, because the mean of its divisors is an integer number (8243582865).

Almost surely, 2^16487165729 is an apocalyptic number.

It is an amenable number.

16487165729 is a deficient number, since it is larger than the sum of its proper divisors (1).

16487165729 is an equidigital number, since it uses as much as digits as its factorization.

16487165729 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5080320, while the sum is 56.

The spelling of 16487165729 in words is "sixteen billion, four hundred eighty-seven million, one hundred sixty-five thousand, seven hundred twenty-nine".