28072216188417 has 16 divisors (see below), whose sum is σ = 38799806048640. Its totient is φ = 18032368822272.

The previous prime is 28072216188349. The next prime is 28072216188437. The reversal of 28072216188417 is 71488161227082.

It is not a de Polignac number, because 28072216188417 - 2¹¹ = 28072216186369 is a prime.

It is not an unprimeable number, because it can be changed into a prime (28072216188437) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 331240128 + ... + 331324865.

It is an arithmetic number, because the mean of its divisors is an integer number (2424987878040).

Almost surely, 2^{28072216188417} is an apocalyptic number.

It is an amenable number.

28072216188417 is a deficient number, since it is larger than the sum of its proper divisors (10727589860223).

28072216188417 is a wasteful number, since it uses less digits than its factorization.

28072216188417 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 662565512.

The product of its (nonzero) digits is 4816896, while the sum is 57.

The spelling of 28072216188417 in words is "twenty-eight trillion, seventy-two billion, two hundred sixteen million, one hundred eighty-eight thousand, four hundred seventeen".