28076665685 has 16 divisors (see below), whose sum is σ = 35175928320. Its totient is φ = 21473105280.

The previous prime is 28076665679. The next prime is 28076665733. The reversal of 28076665685 is 58656667082.

It is not a de Polignac number, because 28076665685 - 2¹⁴ = 28076649301 is a prime.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 149921 + ... + 280409.

It is an arithmetic number, because the mean of its divisors is an integer number (2198495520).

Almost surely, 2^28076665685 is an apocalyptic number.

It is an amenable number.

28076665685 is a deficient number, since it is larger than the sum of its proper divisors (7099262635).

28076665685 is a wasteful number, since it uses less digits than its factorization.

28076665685 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 132388.

The product of its (nonzero) digits is 29030400, while the sum is 59.

The spelling of 28076665685 in words is "twenty-eight billion, seventy-six million, six hundred sixty-five thousand, six hundred eighty-five".