28056108061 has 2 divisors, whose sum is σ = 28056108062. Its totient is φ = 28056108060.

The previous prime is 28056108013. The next prime is 28056108089. The reversal of 28056108061 is 16080165082.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 26112620836 + 1943487225 = 161594^2 + 44085^2 .

It is a cyclic number.

It is not a de Polignac number, because 28056108061 - 2²⁹ = 27519237149 is a prime.

It is a super-3 number, since 3×28056108061³ (a number of 32 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 28056108061.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28056108001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14028054030 + 14028054031.

It is an arithmetic number, because the mean of its divisors is an integer number (14028054031).

Almost surely, 2^28056108061 is an apocalyptic number.

It is an amenable number.

28056108061 is a deficient number, since it is larger than the sum of its proper divisors (1).

28056108061 is an equidigital number, since it uses as much as digits as its factorization.

28056108061 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 23040, while the sum is 37.

The spelling of 28056108061 in words is "twenty-eight billion, fifty-six million, one hundred eight thousand, sixty-one".