28260971029 has 2 divisors, whose sum is σ = 28260971030. Its totient is φ = 28260971028.

The previous prime is 28260971017. The next prime is 28260971077. The reversal of 28260971029 is 92017906282.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 25710519025 + 2550452004 = 160345^2 + 50502^2 .

It is a cyclic number.

It is not a de Polignac number, because 28260971029 - 2¹⁹ = 28260446741 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 28260971029.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28260971329) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14130485514 + 14130485515.

It is an arithmetic number, because the mean of its divisors is an integer number (14130485515).

Almost surely, 2^28260971029 is an apocalyptic number.

It is an amenable number.

28260971029 is a deficient number, since it is larger than the sum of its proper divisors (1).

28260971029 is an equidigital number, since it uses as much as digits as its factorization.

28260971029 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 217728, while the sum is 46.

The spelling of 28260971029 in words is "twenty-eight billion, two hundred sixty million, nine hundred seventy-one thousand, twenty-nine".