28418686013 has 2 divisors, whose sum is σ = 28418686014. Its totient is φ = 28418686012.

The previous prime is 28418685991. The next prime is 28418686067. The reversal of 28418686013 is 31068681482.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 26941283044 + 1477402969 = 164138^2 + 38437^2 .

It is a cyclic number.

It is not a de Polignac number, because 28418686013 - 2⁶ = 28418685949 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28418686613) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14209343006 + 14209343007.

It is an arithmetic number, because the mean of its divisors is an integer number (14209343007).

Almost surely, 2^28418686013 is an apocalyptic number.

It is an amenable number.

28418686013 is a deficient number, since it is larger than the sum of its proper divisors (1).

28418686013 is an equidigital number, since it uses as much as digits as its factorization.

28418686013 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 442368, while the sum is 47.

The spelling of 28418686013 in words is "twenty-eight billion, four hundred eighteen million, six hundred eighty-six thousand, thirteen".