28072123055 has 8 divisors (see below), whose sum is σ = 33855828000. Its totient is φ = 22344844896.

The previous prime is 28072123049. The next prime is 28072123061. The reversal of 28072123055 is 55032127082.

It is an interprime number because it is at equal distance from previous prime (28072123049) and next prime (28072123061).

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

It is a cyclic number.

It is not a de Polignac number, because 28072123055 - 2¹² = 28072118959 is a prime.

It is a congruent number.

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, 14105600 + ... + 14107589.

It is an arithmetic number, because the mean of its divisors is an integer number (4231978500).

Almost surely, 2^28072123055 is an apocalyptic number.

28072123055 is a deficient number, since it is larger than the sum of its proper divisors (5783704945).

28072123055 is a wasteful number, since it uses less digits than its factorization.

28072123055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28213393.

The product of its (nonzero) digits is 33600, while the sum is 35.

The spelling of 28072123055 in words is "twenty-eight billion, seventy-two million, one hundred twenty-three thousand, fifty-five".