28601616353 has 4 divisors (see below), whose sum is σ = 28603195140. Its totient is φ = 28600037568.

The previous prime is 28601616341. The next prime is 28601616403. The reversal of 28601616353 is 35361610682.

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

It can be written as a sum of positive squares in 2 ways, for example, as 21050527744 + 7551088609 = 145088^2 + 86897^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28601616353 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 28601616353.

It is not an unprimeable number, because it can be changed into a prime (28601616053) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 761900 + ... + 798557.

It is an arithmetic number, because the mean of its divisors is an integer number (7150798785).

Almost surely, 2^28601616353 is an apocalyptic number.

It is an amenable number.

28601616353 is a deficient number, since it is larger than the sum of its proper divisors (1578787).

28601616353 is a wasteful number, since it uses less digits than its factorization.

28601616353 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1578786.

The product of its (nonzero) digits is 155520, while the sum is 41.

The spelling of 28601616353 in words is "twenty-eight billion, six hundred one million, six hundred sixteen thousand, three hundred fifty-three".