80016127281 has 12 divisors (see below), whose sum is σ = 115610331252. Its totient is φ = 53329555296.

The previous prime is 80016127249. The next prime is 80016127333. The reversal of 80016127281 is 18272161008.

It can be written as a sum of positive squares in 2 ways, for example, as 25185690000 + 54830437281 = 158700^2 + 234159^2 .

It is not a de Polignac number, because 80016127281 - 2⁵ = 80016127249 is a prime.

It is a super-2 number, since 2×80016127281² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (80016127241) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1175866 + ... + 1242051.

It is an arithmetic number, because the mean of its divisors is an integer number (9634194271).

Almost surely, 2^80016127281 is an apocalyptic number.

It is an amenable number.

80016127281 is a deficient number, since it is larger than the sum of its proper divisors (35594203971).

80016127281 is a wasteful number, since it uses less digits than its factorization.

80016127281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2421600 (or 2421597 counting only the distinct ones).

The product of its (nonzero) digits is 10752, while the sum is 36.

Adding to 80016127281 its reverse (18272161008), we get a palindrome (98288288289).

The spelling of 80016127281 in words is "eighty billion, sixteen million, one hundred twenty-seven thousand, two hundred eighty-one".