28081628061 has 8 divisors (see below), whose sum is σ = 37680656544. Its totient is φ = 18601842480.

The previous prime is 28081628017. The next prime is 28081628111. The reversal of 28081628061 is 16082618082.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 28081628061 - 2⁶ = 28081627997 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28081648061) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 29810175 + ... + 29811116.

It is an arithmetic number, because the mean of its divisors is an integer number (4710082068).

Almost surely, 2^28081628061 is an apocalyptic number.

It is an amenable number.

28081628061 is a deficient number, since it is larger than the sum of its proper divisors (9599028483).

28081628061 is a wasteful number, since it uses less digits than its factorization.

28081628061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59621451.

The product of its (nonzero) digits is 73728, while the sum is 42.

The spelling of 28081628061 in words is "twenty-eight billion, eighty-one million, six hundred twenty-eight thousand, sixty-one".