16487352109 has 2 divisors, whose sum is σ = 16487352110. Its totient is φ = 16487352108.

The previous prime is 16487352103. The next prime is 16487352127. The reversal of 16487352109 is 90125378461.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 16485789609 + 1562500 = 128397^2 + 1250^2 .

It is a cyclic number.

It is not a de Polignac number, because 16487352109 - 2²⁷ = 16353134381 is a prime.

It is a super-2 number, since 2×16487352109² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16487352103) 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, 8243676054 + 8243676055.

It is an arithmetic number, because the mean of its divisors is an integer number (8243676055).

It is a 1-persistent number, because it is pandigital, but 2⋅16487352109 = 32974704218 is not.

Almost surely, 2^16487352109 is an apocalyptic number.

It is an amenable number.

16487352109 is a deficient number, since it is larger than the sum of its proper divisors (1).

16487352109 is an equidigital number, since it uses as much as digits as its factorization.

16487352109 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 362880, while the sum is 46.

The spelling of 16487352109 in words is "sixteen billion, four hundred eighty-seven million, three hundred fifty-two thousand, one hundred nine".