28126165757 has 2 divisors, whose sum is σ = 28126165758. Its totient is φ = 28126165756.

The previous prime is 28126165583. The next prime is 28126165777. The reversal of 28126165757 is 75756162182.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 18423718756 + 9702447001 = 135734^2 + 98501^2 .

It is a cyclic number.

It is not a de Polignac number, because 28126165757 - 2¹⁶ = 28126100221 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28126165777) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14063082878 + 14063082879.

It is an arithmetic number, because the mean of its divisors is an integer number (14063082879).

Almost surely, 2^28126165757 is an apocalyptic number.

It is an amenable number.

28126165757 is a deficient number, since it is larger than the sum of its proper divisors (1).

28126165757 is an equidigital number, since it uses as much as digits as its factorization.

28126165757 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1411200, while the sum is 50.

The spelling of 28126165757 in words is "twenty-eight billion, one hundred twenty-six million, one hundred sixty-five thousand, seven hundred fifty-seven".