280081270081 has 4 divisors (see below), whose sum is σ = 280088143492. Its totient is φ = 280074396672.

The previous prime is 280081270069. The next prime is 280081270141. The reversal of 280081270081 is 180072180082.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 31758447681 + 248322822400 = 178209^2 + 498320^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-280081270081 is a prime.

It is a super-2 number, since 2×280081270081² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 280081270081.

It is not an unprimeable number, because it can be changed into a prime (280081270031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3375216 + ... + 3457201.

It is an arithmetic number, because the mean of its divisors is an integer number (70022035873).

Almost surely, 2^280081270081 is an apocalyptic number.

It is an amenable number.

280081270081 is a deficient number, since it is larger than the sum of its proper divisors (6873411).

280081270081 is an equidigital number, since it uses as much as digits as its factorization.

280081270081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6873410.

The product of its (nonzero) digits is 14336, while the sum is 37.

The spelling of 280081270081 in words is "two hundred eighty billion, eighty-one million, two hundred seventy thousand, eighty-one".