28112285701 has 2 divisors, whose sum is σ = 28112285702. Its totient is φ = 28112285700.

The previous prime is 28112285699. The next prime is 28112285711. The reversal of 28112285701 is 10758221182.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 21895120900 + 6217164801 = 147970^2 + 78849^2 .

It is a cyclic number.

It is not a de Polignac number, because 28112285701 - 2¹ = 28112285699 is a prime.

It is a super-2 number, since 2×28112285701² (a number of 22 digits) contains 22 as substring.

Together with 28112285699, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28112285711) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14056142850 + 14056142851.

It is an arithmetic number, because the mean of its divisors is an integer number (14056142851).

Almost surely, 2^28112285701 is an apocalyptic number.

It is an amenable number.

28112285701 is a deficient number, since it is larger than the sum of its proper divisors (1).

28112285701 is an equidigital number, since it uses as much as digits as its factorization.

28112285701 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 17920, while the sum is 37.

The spelling of 28112285701 in words is "twenty-eight billion, one hundred twelve million, two hundred eighty-five thousand, seven hundred one".