28829385394559 has 4 divisors (see below), whose sum is σ = 28936557831240. Its totient is φ = 28722212957880.

The previous prime is 28829385394553. The next prime is 28829385394597. The reversal of 28829385394559 is 95549358392882.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28829385394559 is a prime.

It is a super-2 number, since 2×28829385394559² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28829385394553) 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, 53586217937 + ... + 53586218474.

It is an arithmetic number, because the mean of its divisors is an integer number (7234139457810).

Almost surely, 2^{28829385394559} is an apocalyptic number.

28829385394559 is a deficient number, since it is larger than the sum of its proper divisors (107172436681).

28829385394559 is a wasteful number, since it uses less digits than its factorization.

28829385394559 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 107172436680.

The product of its digits is 6718464000, while the sum is 80.

The spelling of 28829385394559 in words is "twenty-eight trillion, eight hundred twenty-nine billion, three hundred eighty-five million, three hundred ninety-four thousand, five hundred fifty-nine".