28183679987 has 2 divisors, whose sum is σ = 28183679988. Its totient is φ = 28183679986.

The previous prime is 28183679981. The next prime is 28183680011. The reversal of 28183679987 is 78997638182.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 28183679987 - 2⁴ = 28183679971 is a prime.

It is not a weakly prime, because it can be changed into another prime (28183679981) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14091839993 + 14091839994.

It is an arithmetic number, because the mean of its divisors is an integer number (14091839994).

Almost surely, 2^28183679987 is an apocalyptic number.

28183679987 is a deficient number, since it is larger than the sum of its proper divisors (1).

28183679987 is an equidigital number, since it uses as much as digits as its factorization.

28183679987 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 73156608, while the sum is 68.

The spelling of 28183679987 in words is "twenty-eight billion, one hundred eighty-three million, six hundred seventy-nine thousand, nine hundred eighty-seven".