28606987013 has 4 divisors (see below), whose sum is σ = 31207622208. Its totient is φ = 26006351820.

The previous prime is 28606987009. The next prime is 28606987021. The reversal of 28606987013 is 31078960682.

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.

It is a cyclic number.

It is not a de Polignac number, because 28606987013 - 2² = 28606987009 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28606987063) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1300317581 + ... + 1300317602.

It is an arithmetic number, because the mean of its divisors is an integer number (7801905552).

Almost surely, 2^28606987013 is an apocalyptic number.

It is an amenable number.

28606987013 is a deficient number, since it is larger than the sum of its proper divisors (2600635195).

28606987013 is a wasteful number, since it uses less digits than its factorization.

28606987013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2600635194.

The product of its (nonzero) digits is 870912, while the sum is 50.

The spelling of 28606987013 in words is "twenty-eight billion, six hundred six million, nine hundred eighty-seven thousand, thirteen".