28112461666 has 8 divisors (see below), whose sum is σ = 44002113984. Its totient is φ = 13445090340.

The previous prime is 28112461661. The next prime is 28112461667. The reversal of 28112461666 is 66616421182.

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

It is not an unprimeable number, because it can be changed into a prime (28112461661) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 305570190 + ... + 305570281.

It is an arithmetic number, because the mean of its divisors is an integer number (5500264248).

Almost surely, 2^28112461666 is an apocalyptic number.

28112461666 is a deficient number, since it is larger than the sum of its proper divisors (15889652318).

28112461666 is a wasteful number, since it uses less digits than its factorization.

28112461666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 611140496.

The product of its digits is 165888, while the sum is 43.

The spelling of 28112461666 in words is "twenty-eight billion, one hundred twelve million, four hundred sixty-one thousand, six hundred sixty-six".