28056156855 has 8 divisors (see below), whose sum is σ = 44889850992. Its totient is φ = 14963283648.

The previous prime is 28056156851. The next prime is 28056156881. The reversal of 28056156855 is 55865165082.

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

It is not a de Polignac number, because 28056156855 - 2² = 28056156851 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 28056156798 and 28056156807.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28056156851) by changing a digit.

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, 935205214 + ... + 935205243.

It is an arithmetic number, because the mean of its divisors is an integer number (5611231374).

Almost surely, 2^28056156855 is an apocalyptic number.

28056156855 is a deficient number, since it is larger than the sum of its proper divisors (16833694137).

28056156855 is a wasteful number, since it uses less digits than its factorization.

28056156855 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1870410465.

The product of its (nonzero) digits is 2880000, while the sum is 51.

The spelling of 28056156855 in words is "twenty-eight billion, fifty-six million, one hundred fifty-six thousand, eight hundred fifty-five".