28829385394561 has 8 divisors (see below), whose sum is σ = 28856343972960. Its totient is φ = 28802439197568.

The previous prime is 28829385394553. The next prime is 28829385394597. The reversal of 28829385394561 is 16549358392882.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 28829385394561 - 2³ = 28829385394553 is a prime.

It is a super-2 number, since 2×28829385394561² (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 (28829355394561) 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 7 ways as a sum of consecutive naturals, for example, 1566990 + ... + 7753336.

It is an arithmetic number, because the mean of its divisors is an integer number (3607042996620).

Almost surely, 2^{28829385394561} is an apocalyptic number.

It is an amenable number.

28829385394561 is a deficient number, since it is larger than the sum of its proper divisors (26958578399).

28829385394561 is a wasteful number, since it uses less digits than its factorization.

28829385394561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6190703.

The product of its digits is 895795200, while the sum is 73.

The spelling of 28829385394561 in words is "twenty-eight trillion, eight hundred twenty-nine billion, three hundred eighty-five million, three hundred ninety-four thousand, five hundred sixty-one".