28508008061 has 16 divisors (see below), whose sum is σ = 31408871424. Its totient is φ = 25710234624.

The previous prime is 28508008049. The next prime is 28508008079. The reversal of 28508008061 is 16080080582.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28508008061 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 (28501008061) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 312116 + ... + 392978.

It is an arithmetic number, because the mean of its divisors is an integer number (1963054464).

Almost surely, 2^28508008061 is an apocalyptic number.

It is an amenable number.

28508008061 is a deficient number, since it is larger than the sum of its proper divisors (2900863363).

28508008061 is a wasteful number, since it uses less digits than its factorization.

28508008061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81500.

The product of its (nonzero) digits is 30720, while the sum is 38.

The spelling of 28508008061 in words is "twenty-eight billion, five hundred eight million, eight thousand, sixty-one".