28620382811687 has 4 divisors (see below), whose sum is σ = 28722234708096. Its totient is φ = 28518530915280.

The previous prime is 28620382811677. The next prime is 28620382811711. The reversal of 28620382811687 is 78611828302682.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28620382811687 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 (28620382811677) 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, 50925947783 + ... + 50925948344.

It is an arithmetic number, because the mean of its divisors is an integer number (7180558677024).

Almost surely, 2^{28620382811687} is an apocalyptic number.

28620382811687 is a deficient number, since it is larger than the sum of its proper divisors (101851896409).

28620382811687 is a wasteful number, since it uses less digits than its factorization.

28620382811687 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101851896408.

The product of its (nonzero) digits is 24772608, while the sum is 62.

The spelling of 28620382811687 in words is "twenty-eight trillion, six hundred twenty billion, three hundred eighty-two million, eight hundred eleven thousand, six hundred eighty-seven".