28651836797 has 2 divisors, whose sum is σ = 28651836798. Its totient is φ = 28651836796.

The previous prime is 28651836793. The next prime is 28651836877. The reversal of 28651836797 is 79763815682.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 20934038596 + 7717798201 = 144686^2 + 87851^2 .

It is a cyclic number.

It is not a de Polignac number, because 28651836797 - 2² = 28651836793 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28651836793) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14325918398 + 14325918399.

It is an arithmetic number, because the mean of its divisors is an integer number (14325918399).

Almost surely, 2^28651836797 is an apocalyptic number.

It is an amenable number.

28651836797 is a deficient number, since it is larger than the sum of its proper divisors (1).

28651836797 is an equidigital number, since it uses as much as digits as its factorization.

28651836797 is an evil number, because the sum of its binary digits is even.

The product of its digits is 30481920, while the sum is 62.

The spelling of 28651836797 in words is "twenty-eight billion, six hundred fifty-one million, eight hundred thirty-six thousand, seven hundred ninety-seven".