28044408248481 has 4 divisors (see below), whose sum is σ = 37392544331312. Its totient is φ = 18696272165652.

The previous prime is 28044408248471. The next prime is 28044408248551. The reversal of 28044408248481 is 18484280444082.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 28044408248481 - 2⁹ = 28044408247969 is a prime.

It is a super-2 number, since 2×28044408248481² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28044408248471) 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, 4674068041411 + ... + 4674068041416.

It is an arithmetic number, because the mean of its divisors is an integer number (9348136082828).

Almost surely, 2^{28044408248481} is an apocalyptic number.

It is an amenable number.

28044408248481 is a deficient number, since it is larger than the sum of its proper divisors (9348136082831).

28044408248481 is an equidigital number, since it uses as much as digits as its factorization.

28044408248481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9348136082830.

The product of its (nonzero) digits is 16777216, while the sum is 57.

The spelling of 28044408248481 in words is "twenty-eight trillion, forty-four billion, four hundred eight million, two hundred forty-eight thousand, four hundred eighty-one".