16864731089 has 2 divisors, whose sum is σ = 16864731090. Its totient is φ = 16864731088.

The previous prime is 16864731083. The next prime is 16864731127. The reversal of 16864731089 is 98013746861.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10901030464 + 5963700625 = 104408^2 + 77225^2 .

It is a cyclic number.

It is not a de Polignac number, because 16864731089 - 2¹² = 16864726993 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 16864731089.

It is not a weakly prime, because it can be changed into another prime (16864731083) 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, 8432365544 + 8432365545.

It is an arithmetic number, because the mean of its divisors is an integer number (8432365545).

Almost surely, 2^16864731089 is an apocalyptic number.

It is an amenable number.

16864731089 is a deficient number, since it is larger than the sum of its proper divisors (1).

16864731089 is an equidigital number, since it uses as much as digits as its factorization.

16864731089 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1741824, while the sum is 53.

The spelling of 16864731089 in words is "sixteen billion, eight hundred sixty-four million, seven hundred thirty-one thousand, eighty-nine".