28677366665 has 8 divisors (see below), whose sum is σ = 34976985288. Its totient is φ = 22565796480.

The previous prime is 28677366649. The next prime is 28677366701. The reversal of 28677366665 is 56666377682.

It can be written as a sum of positive squares in 4 ways, for example, as 820421449 + 27856945216 = 28643^2 + 166904^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 28677366665 - 2⁴ = 28677366649 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 28677366598 and 28677366607.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 47011772 + ... + 47012381.

It is an arithmetic number, because the mean of its divisors is an integer number (4372123161).

Almost surely, 2^28677366665 is an apocalyptic number.

It is an amenable number.

28677366665 is a deficient number, since it is larger than the sum of its proper divisors (6299618623).

28677366665 is an equidigital number, since it uses as much as digits as its factorization.

28677366665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 94024219.

The product of its digits is 91445760, while the sum is 62.

The spelling of 28677366665 in words is "twenty-eight billion, six hundred seventy-seven million, three hundred sixty-six thousand, six hundred sixty-five".