28285106551 has 4 divisors (see below), whose sum is σ = 30460883992. Its totient is φ = 26109329112.

The previous prime is 28285106539. The next prime is 28285106627. The reversal of 28285106551 is 15560158282.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 28285106551 - 2¹⁵ = 28285073783 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 28285106498 and 28285106507.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28285116551) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1087888701 + ... + 1087888726.

It is an arithmetic number, because the mean of its divisors is an integer number (7615220998).

Almost surely, 2^28285106551 is an apocalyptic number.

28285106551 is a deficient number, since it is larger than the sum of its proper divisors (2175777441).

28285106551 is a wasteful number, since it uses less digits than its factorization.

28285106551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2175777440.

The product of its (nonzero) digits is 192000, while the sum is 43.

The spelling of 28285106551 in words is "twenty-eight billion, two hundred eighty-five million, one hundred six thousand, five hundred fifty-one".