28748722335329 has 2 divisors, whose sum is σ = 28748722335330. Its totient is φ = 28748722335328.

The previous prime is 28748722335317. The next prime is 28748722335379. The reversal of 28748722335329 is 92353322784782.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 18831564016225 + 9917158319104 = 4339535^2 + 3149152^2 .

It is a cyclic number.

It is not a de Polignac number, because 28748722335329 - 2¹² = 28748722331233 is a prime.

It is not a weakly prime, because it can be changed into another prime (28748722335379) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14374361167664 + 14374361167665.

It is an arithmetic number, because the mean of its divisors is an integer number (14374361167665).

Almost surely, 2^{28748722335329} is an apocalyptic number.

It is an amenable number.

28748722335329 is a deficient number, since it is larger than the sum of its proper divisors (1).

28748722335329 is an equidigital number, since it uses as much as digits as its factorization.

28748722335329 is an evil number, because the sum of its binary digits is even.

The product of its digits is 243855360, while the sum is 65.

The spelling of 28748722335329 in words is "twenty-eight trillion, seven hundred forty-eight billion, seven hundred twenty-two million, three hundred thirty-five thousand, three hundred twenty-nine".