28321665106 has 8 divisors (see below), whose sum is σ = 48551425920. Its totient is φ = 12137856468.

The previous prime is 28321665077. The next prime is 28321665137. The reversal of 28321665106 is 60156612382.

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1011488026 + ... + 1011488053.

It is an arithmetic number, because the mean of its divisors is an integer number (6068928240).

Almost surely, 2^28321665106 is an apocalyptic number.

28321665106 is a deficient number, since it is larger than the sum of its proper divisors (20229760814).

28321665106 is a wasteful number, since it uses less digits than its factorization.

28321665106 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2022976088.

The product of its (nonzero) digits is 103680, while the sum is 40.

The spelling of 28321665106 in words is "twenty-eight billion, three hundred twenty-one million, six hundred sixty-five thousand, one hundred six".