28265310361 has 2 divisors, whose sum is σ = 28265310362. Its totient is φ = 28265310360.

The previous prime is 28265310329. The next prime is 28265310371. The reversal of 28265310361 is 16301356282.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 25577924761 + 2687385600 = 159931^2 + 51840^2 .

It is a cyclic number.

It is not a de Polignac number, because 28265310361 - 2⁵ = 28265310329 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 28265310361.

It is not a weakly prime, because it can be changed into another prime (28265310371) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14132655180 + 14132655181.

It is an arithmetic number, because the mean of its divisors is an integer number (14132655181).

Almost surely, 2^28265310361 is an apocalyptic number.

It is an amenable number.

28265310361 is a deficient number, since it is larger than the sum of its proper divisors (1).

28265310361 is an equidigital number, since it uses as much as digits as its factorization.

28265310361 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 51840, while the sum is 37.

The spelling of 28265310361 in words is "twenty-eight billion, two hundred sixty-five million, three hundred ten thousand, three hundred sixty-one".