28065207601 has 2 divisors, whose sum is σ = 28065207602. Its totient is φ = 28065207600.

The previous prime is 28065207563. The next prime is 28065207613. The reversal of 28065207601 is 10670256082.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 17682616576 + 10382591025 = 132976^2 + 101895^2 .

It is a cyclic number.

It is not a de Polignac number, because 28065207601 - 2¹⁵ = 28065174833 is a prime.

It is not a weakly prime, because it can be changed into another prime (28065207661) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14032603800 + 14032603801.

It is an arithmetic number, because the mean of its divisors is an integer number (14032603801).

Almost surely, 2^28065207601 is an apocalyptic number.

It is an amenable number.

28065207601 is a deficient number, since it is larger than the sum of its proper divisors (1).

28065207601 is an equidigital number, since it uses as much as digits as its factorization.

28065207601 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 40320, while the sum is 37.

The spelling of 28065207601 in words is "twenty-eight billion, sixty-five million, two hundred seven thousand, six hundred one".