28048494858669 has 6 divisors (see below), whose sum is σ = 40514492573646. Its totient is φ = 18698996572440.

The previous prime is 28048494858653. The next prime is 28048494858673. The reversal of 28048494858669 is 96685849484082.

28048494858669 is a `hidden beast` number, since 2 + 8 + 0 + 48 + 494 + 8 + 5 + 86 + 6 + 9 = 666.

It can be written as a sum of positive squares in only one way, i.e., 28016251269444 + 32243589225 = 5293038^2 + 179565^2 .

It is not a de Polignac number, because 28048494858669 - 2⁴ = 28048494858653 is a prime.

It is a super-2 number, since 2×28048494858669² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28048494858679) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1558249714362 + ... + 1558249714379.

It is an arithmetic number, because the mean of its divisors is an integer number (6752415428941).

Almost surely, 2^{28048494858669} is an apocalyptic number.

It is an amenable number.

28048494858669 is a deficient number, since it is larger than the sum of its proper divisors (12465997714977).

28048494858669 is a wasteful number, since it uses less digits than its factorization.

28048494858669 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3116499428747 (or 3116499428744 counting only the distinct ones).

The product of its (nonzero) digits is 7644119040, while the sum is 81.

The spelling of 28048494858669 in words is "twenty-eight trillion, forty-eight billion, four hundred ninety-four million, eight hundred fifty-eight thousand, six hundred sixty-nine".