28060785361 has 12 divisors (see below), whose sum is σ = 34562264868. Its totient is φ = 22637271552.

The previous prime is 28060785343. The next prime is 28060785367. The reversal of 28060785361 is 16358706082.

It can be written as a sum of positive squares in 2 ways, for example, as 26407875025 + 1652910336 = 162505^2 + 40656^2 .

It is a de Polignac number, because none of the positive numbers 2^k-28060785361 is a prime.

It is a super-2 number, since 2×28060785361² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (28060785367) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 16842376 + ... + 16844041.

It is an arithmetic number, because the mean of its divisors is an integer number (2880188739).

Almost surely, 2^28060785361 is an apocalyptic number.

It is an amenable number.

28060785361 is a deficient number, since it is larger than the sum of its proper divisors (6501479507).

28060785361 is a wasteful number, since it uses less digits than its factorization.

28060785361 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33686448 (or 33686441 counting only the distinct ones).

The product of its (nonzero) digits is 483840, while the sum is 46.

The spelling of 28060785361 in words is "twenty-eight billion, sixty million, seven hundred eighty-five thousand, three hundred sixty-one".