28601161547 has 4 divisors (see below), whose sum is σ = 32687041776. Its totient is φ = 24515281320.

The previous prime is 28601161451. The next prime is 28601161553. The reversal of 28601161547 is 74516110682.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 28601161547 - 2⁸ = 28601161291 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28601161577) 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 3 ways as a sum of consecutive naturals, for example, 2042940104 + ... + 2042940117.

It is an arithmetic number, because the mean of its divisors is an integer number (8171760444).

Almost surely, 2^28601161547 is an apocalyptic number.

28601161547 is a deficient number, since it is larger than the sum of its proper divisors (4085880229).

28601161547 is an equidigital number, since it uses as much as digits as its factorization.

28601161547 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4085880228.

The product of its (nonzero) digits is 80640, while the sum is 41.

The spelling of 28601161547 in words is "twenty-eight billion, six hundred one million, one hundred sixty-one thousand, five hundred forty-seven".