828402646289 has 2 divisors, whose sum is σ = 828402646290. Its totient is φ = 828402646288.

The previous prime is 828402646271. The next prime is 828402646541. The reversal of 828402646289 is 982646204828.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 660473163025 + 167929483264 = 812695^2 + 409792^2 .

It is a cyclic number.

It is not a de Polignac number, because 828402646289 - 2²⁰ = 828401597713 is a prime.

It is not a weakly prime, because it can be changed into another prime (828402648289) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 414201323144 + 414201323145.

It is an arithmetic number, because the mean of its divisors is an integer number (414201323145).

Almost surely, 2^828402646289 is an apocalyptic number.

It is an amenable number.

828402646289 is a deficient number, since it is larger than the sum of its proper divisors (1).

828402646289 is an equidigital number, since it uses as much as digits as its factorization.

828402646289 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 21233664, while the sum is 59.

The spelling of 828402646289 in words is "eight hundred twenty-eight billion, four hundred two million, six hundred forty-six thousand, two hundred eighty-nine".