28601448697 has 2 divisors, whose sum is σ = 28601448698. Its totient is φ = 28601448696.

The previous prime is 28601448677. The next prime is 28601448709. The reversal of 28601448697 is 79684410682.

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., 28597853881 + 3594816 = 169109^2 + 1896^2 .

It is a cyclic number.

It is not a de Polignac number, because 28601448697 - 2²⁷ = 28467230969 is a prime.

It is a super-3 number, since 3×28601448697³ (a number of 32 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (28601448677) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14300724348 + 14300724349.

It is an arithmetic number, because the mean of its divisors is an integer number (14300724349).

Almost surely, 2^28601448697 is an apocalyptic number.

It is an amenable number.

28601448697 is a deficient number, since it is larger than the sum of its proper divisors (1).

28601448697 is an equidigital number, since it uses as much as digits as its factorization.

28601448697 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4644864, while the sum is 55.

The spelling of 28601448697 in words is "twenty-eight billion, six hundred one million, four hundred forty-eight thousand, six hundred ninety-seven".