28136346566 has 16 divisors (see below), whose sum is σ = 42425552400. Its totient is φ = 13994622720.

The previous prime is 28136346527. The next prime is 28136346583. The reversal of 28136346566 is 66564363182.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 420485 + ... + 482783.

It is an arithmetic number, because the mean of its divisors is an integer number (2651597025).

Almost surely, 2^28136346566 is an apocalyptic number.

28136346566 is a deficient number, since it is larger than the sum of its proper divisors (14289205834).

28136346566 is a wasteful number, since it uses less digits than its factorization.

28136346566 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63479.

The product of its digits is 3732480, while the sum is 50.

The spelling of 28136346566 in words is "twenty-eight billion, one hundred thirty-six million, three hundred forty-six thousand, five hundred sixty-six".