280611768011 has 4 divisors (see below), whose sum is σ = 281406702552. Its totient is φ = 279816833472.

The previous prime is 280611768001. The next prime is 280611768049. The reversal of 280611768011 is 110867116082.

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

It is a cyclic number.

It is not a de Polignac number, because 280611768011 - 2¹⁰ = 280611766987 is a prime.

It is a super-2 number, since 2×280611768011² (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 280611768011.

It is not an unprimeable number, because it can be changed into a prime (280611768001) 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 in 3 ways as a sum of consecutive naturals, for example, 397466741 + ... + 397467446.

It is an arithmetic number, because the mean of its divisors is an integer number (70351675638).

Almost surely, 2^280611768011 is an apocalyptic number.

280611768011 is a deficient number, since it is larger than the sum of its proper divisors (794934541).

280611768011 is an equidigital number, since it uses as much as digits as its factorization.

280611768011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 794934540.

The product of its (nonzero) digits is 32256, while the sum is 41.

The spelling of 280611768011 in words is "two hundred eighty billion, six hundred eleven million, seven hundred sixty-eight thousand, eleven".