28174784872643 has 8 divisors (see below), whose sum is σ = 28210709108400. Its totient is φ = 28138862075040.

The previous prime is 28174784872589. The next prime is 28174784872649. The reversal of 28174784872643 is 34627848747182.

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 28174784872643 - 2¹² = 28174784868547 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28174784872649) 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, 42027188 + ... + 42692318.

It is an arithmetic number, because the mean of its divisors is an integer number (3526338638550).

Almost surely, 2^{28174784872643} is an apocalyptic number.

28174784872643 is a deficient number, since it is larger than the sum of its proper divisors (35924235757).

28174784872643 is an equidigital number, since it uses as much as digits as its factorization.

28174784872643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 719077.

The product of its digits is 809238528, while the sum is 71.

The spelling of 28174784872643 in words is "twenty-eight trillion, one hundred seventy-four billion, seven hundred eighty-four million, eight hundred seventy-two thousand, six hundred forty-three".