28147129382647 has 8 divisors (see below), whose sum is σ = 30706148683152. Its totient is φ = 25588141641600.

The previous prime is 28147129382641. The next prime is 28147129382651. The reversal of 28147129382647 is 74628392174182.

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 28147129382647 - 2²⁷ = 28146995164919 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28147129382641) 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, 6005458 + ... + 9610399.

It is an arithmetic number, because the mean of its divisors is an integer number (3838268585394).

Almost surely, 2^{28147129382647} is an apocalyptic number.

28147129382647 is a deficient number, since it is larger than the sum of its proper divisors (2559019300505).

28147129382647 is a wasteful number, since it uses less digits than its factorization.

28147129382647 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15779729.

The product of its digits is 65028096, while the sum is 64.

The spelling of 28147129382647 in words is "twenty-eight trillion, one hundred forty-seven billion, one hundred twenty-nine million, three hundred eighty-two thousand, six hundred forty-seven".