28421293325569 has 24 divisors (see below), whose sum is σ = 31822489650560. Its totient is φ = 25308106580736.

The previous prime is 28421293325483. The next prime is 28421293325597. The reversal of 28421293325569 is 96552339212482.

It is not a de Polignac number, because 28421293325569 - 2¹⁹ = 28421292801281 is a prime.

It is a super-2 number, since 2×28421293325569² (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 (28421293325069) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 737944 + ... + 7575430.

Almost surely, 2^{28421293325569} is an apocalyptic number.

It is an amenable number.

28421293325569 is a deficient number, since it is larger than the sum of its proper divisors (3401196324991).

28421293325569 is a wasteful number, since it uses less digits than its factorization.

28421293325569 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6838297 (or 6838280 counting only the distinct ones).

The product of its digits is 55987200, while the sum is 61.

The spelling of 28421293325569 in words is "twenty-eight trillion, four hundred twenty-one billion, two hundred ninety-three million, three hundred twenty-five thousand, five hundred sixty-nine".