28477756271 has 8 divisors (see below), whose sum is σ = 28774030560. Its totient is φ = 28182118752.

The previous prime is 28477756253. The next prime is 28477756273. The reversal of 28477756271 is 17265777482.

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 28477756271 - 2¹⁸ = 28477494127 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 (28477756273) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 69020 + ... + 248433.

It is an arithmetic number, because the mean of its divisors is an integer number (3596753820).

Almost surely, 2^28477756271 is an apocalyptic number.

28477756271 is a deficient number, since it is larger than the sum of its proper divisors (296274289).

28477756271 is a wasteful number, since it uses less digits than its factorization.

28477756271 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 318385.

The product of its digits is 9219840, while the sum is 56.

The spelling of 28477756271 in words is "twenty-eight billion, four hundred seventy-seven million, seven hundred fifty-six thousand, two hundred seventy-one".