28555484376871 has 8 divisors (see below), whose sum is σ = 29135328753024. Its totient is φ = 27980574846840.

The previous prime is 28555484376857. The next prime is 28555484376877. The reversal of 28555484376871 is 17867348455582.

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 28555484376871 - 2⁷ = 28555484376743 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 28555484376794 and 28555484376803.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28555484376877) 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, 1233699841 + ... + 1233722986.

It is an arithmetic number, because the mean of its divisors is an integer number (3641916094128).

Almost surely, 2^{28555484376871} is an apocalyptic number.

28555484376871 is a deficient number, since it is larger than the sum of its proper divisors (579844376153).

28555484376871 is a wasteful number, since it uses less digits than its factorization.

28555484376871 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2467423061.

The product of its digits is 1806336000, while the sum is 73.

The spelling of 28555484376871 in words is "twenty-eight trillion, five hundred fifty-five billion, four hundred eighty-four million, three hundred seventy-six thousand, eight hundred seventy-one".