28455455481 has 32 divisors (see below), whose sum is σ = 39290634240. Its totient is φ = 18307238976.

The previous prime is 28455455453. The next prime is 28455455503. The reversal of 28455455481 is 18455455482.

It is not a de Polignac number, because 28455455481 - 2¹⁰ = 28455454457 is a prime.

It is a super-2 number, since 2×28455455481² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (28455455381) 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 31 ways as a sum of consecutive naturals, for example, 12441120 + ... + 12443406.

It is an arithmetic number, because the mean of its divisors is an integer number (1227832320).

Almost surely, 2^28455455481 is an apocalyptic number.

It is an amenable number.

28455455481 is a deficient number, since it is larger than the sum of its proper divisors (10835178759).

28455455481 is a wasteful number, since it uses less digits than its factorization.

28455455481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3533.

The product of its digits is 5120000, while the sum is 51.

Subtracting from 28455455481 its reverse (18455455482), we obtain a palindrome (9999999999).

The spelling of 28455455481 in words is "twenty-eight billion, four hundred fifty-five million, four hundred fifty-five thousand, four hundred eighty-one".