28058167865 has 128 divisors (see below), whose sum is σ = 43605209088. Its totient is φ = 16864174080.

The previous prime is 28058167847. The next prime is 28058167877. The reversal of 28058167865 is 56876185082.

It is a happy number.

It is not a de Polignac number, because 28058167865 - 2¹² = 28058163769 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 28058167865.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 178714367 + ... + 178714523.

It is an arithmetic number, because the mean of its divisors is an integer number (340665696).

Almost surely, 2^28058167865 is an apocalyptic number.

It is an amenable number.

28058167865 is a deficient number, since it is larger than the sum of its proper divisors (15547041223).

28058167865 is a wasteful number, since it uses less digits than its factorization.

28058167865 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 427.

The product of its (nonzero) digits is 6451200, while the sum is 56.

The spelling of 28058167865 in words is "twenty-eight billion, fifty-eight million, one hundred sixty-seven thousand, eight hundred sixty-five".