28060845617 has 4 divisors (see below), whose sum is σ = 32069537856. Its totient is φ = 24052153380.

The previous prime is 28060845613. The next prime is 28060845619. The reversal of 28060845617 is 71654806082.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 71654806082 = 2 ⋅35827403041.

It is a cyclic number.

It is not a de Polignac number, because 28060845617 - 2² = 28060845613 is a prime.

It is a super-2 number, since 2×28060845617² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28060845611) 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, 2004346109 + ... + 2004346122.

It is an arithmetic number, because the mean of its divisors is an integer number (8017384464).

Almost surely, 2^28060845617 is an apocalyptic number.

It is an amenable number.

28060845617 is a deficient number, since it is larger than the sum of its proper divisors (4008692239).

28060845617 is an equidigital number, since it uses as much as digits as its factorization.

28060845617 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4008692238.

The product of its (nonzero) digits is 645120, while the sum is 47.

The spelling of 28060845617 in words is "twenty-eight billion, sixty million, eight hundred forty-five thousand, six hundred seventeen".