28159122374187 has 8 divisors (see below), whose sum is σ = 42909138855936. Its totient is φ = 16090927070952.

The previous prime is 28159122374183. The next prime is 28159122374209. The reversal of 28159122374187 is 78147322195182.

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

It is not a de Polignac number, because 28159122374187 - 2² = 28159122374183 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 28159122374187.

It is not an unprimeable number, because it can be changed into a prime (28159122374183) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 670455294603 + ... + 670455294644.

It is an arithmetic number, because the mean of its divisors is an integer number (5363642356992).

Almost surely, 2^{28159122374187} is an apocalyptic number.

28159122374187 is a deficient number, since it is larger than the sum of its proper divisors (14750016481749).

28159122374187 is a wasteful number, since it uses less digits than its factorization.

28159122374187 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1340910589257.

The product of its digits is 13547520, while the sum is 60.

The spelling of 28159122374187 in words is "twenty-eight trillion, one hundred fifty-nine billion, one hundred twenty-two million, three hundred seventy-four thousand, one hundred eighty-seven".