80016281 has 2 divisors, whose sum is σ = 80016282. Its totient is φ = 80016280.

The previous prime is 80016253. The next prime is 80016283. The reversal of 80016281 is 18261008.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 66259600 + 13756681 = 8140^2 + 3709^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-80016281 is a prime.

It is a super-2 number, since 2×80016281² = 12805210450141922, which contains 22 as substring.

It is a Sophie Germain prime.

Together with 80016283, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 80016281.

It is not a weakly prime, because it can be changed into another prime (80016283) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40008140 + 40008141.

It is an arithmetic number, because the mean of its divisors is an integer number (40008141).

Almost surely, 2^80016281 is an apocalyptic number.

It is an amenable number.

80016281 is a deficient number, since it is larger than the sum of its proper divisors (1).

80016281 is an equidigital number, since it uses as much as digits as its factorization.

80016281 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 768, while the sum is 26.

The square root of 80016281 is about 8945.1819992664. The cubic root of 80016281 is about 430.9161663163.

Adding to 80016281 its reverse (18261008), we get a palindrome (98277289).

The spelling of 80016281 in words is "eighty million, sixteen thousand, two hundred eighty-one".