28028003055551 has 8 divisors (see below), whose sum is σ = 28033314021024. Its totient is φ = 28022692531680.

The previous prime is 28028003055539. The next prime is 28028003055553. The reversal of 28028003055551 is 15555030082082.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28028003055551 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28028003055553) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 144230585 + ... + 144424781.

It is an arithmetic number, because the mean of its divisors is an integer number (3504164252628).

Almost surely, 2^{28028003055551} is an apocalyptic number.

28028003055551 is a deficient number, since it is larger than the sum of its proper divisors (5310965473).

28028003055551 is a wasteful number, since it uses less digits than its factorization.

28028003055551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 220801.

The product of its (nonzero) digits is 480000, while the sum is 44.

The spelling of 28028003055551 in words is "twenty-eight trillion, twenty-eight billion, three million, fifty-five thousand, five hundred fifty-one".