28316287061 has 2 divisors, whose sum is σ = 28316287062. Its totient is φ = 28316287060.

The previous prime is 28316287037. The next prime is 28316287067. The reversal of 28316287061 is 16078261382.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 15617250961 + 12699036100 = 124969^2 + 112690^2 .

It is a cyclic number.

It is not a de Polignac number, because 28316287061 - 2¹⁸ = 28316024917 is a prime.

It is a super-2 number, since 2×28316287061² (a number of 22 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28316287067) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14158143530 + 14158143531.

It is an arithmetic number, because the mean of its divisors is an integer number (14158143531).

Almost surely, 2^28316287061 is an apocalyptic number.

It is an amenable number.

28316287061 is a deficient number, since it is larger than the sum of its proper divisors (1).

28316287061 is an equidigital number, since it uses as much as digits as its factorization.

28316287061 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 193536, while the sum is 44.

The spelling of 28316287061 in words is "twenty-eight billion, three hundred sixteen million, two hundred eighty-seven thousand, sixty-one".