28078766011 has 2 divisors, whose sum is σ = 28078766012. Its totient is φ = 28078766010.

The previous prime is 28078766003. The next prime is 28078766021. The reversal of 28078766011 is 11066787082.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 28078766011 - 2³ = 28078766003 is a prime.

It is a super-3 number, since 3×28078766011³ (a number of 32 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (28078766021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14039383005 + 14039383006.

It is an arithmetic number, because the mean of its divisors is an integer number (14039383006).

Almost surely, 2^28078766011 is an apocalyptic number.

28078766011 is a deficient number, since it is larger than the sum of its proper divisors (1).

28078766011 is an equidigital number, since it uses as much as digits as its factorization.

28078766011 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 225792, while the sum is 46.

The spelling of 28078766011 in words is "twenty-eight billion, seventy-eight million, seven hundred sixty-six thousand, eleven".