16347283681 has 2 divisors, whose sum is σ = 16347283682. Its totient is φ = 16347283680.

The previous prime is 16347283621. The next prime is 16347283697. The reversal of 16347283681 is 18638274361.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 16328750656 + 18533025 = 127784^2 + 4305^2 .

It is a cyclic number.

It is not a de Polignac number, because 16347283681 - 2¹³ = 16347275489 is a prime.

It is a super-2 number, since 2×16347283681² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (16347283621) 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, 8173641840 + 8173641841.

It is an arithmetic number, because the mean of its divisors is an integer number (8173641841).

Almost surely, 2^16347283681 is an apocalyptic number.

It is an amenable number.

16347283681 is a deficient number, since it is larger than the sum of its proper divisors (1).

16347283681 is an equidigital number, since it uses as much as digits as its factorization.

16347283681 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1161216, while the sum is 49.

The spelling of 16347283681 in words is "sixteen billion, three hundred forty-seven million, two hundred eighty-three thousand, six hundred eighty-one".