1245728309299 has 2 divisors, whose sum is σ = 1245728309300. Its totient is φ = 1245728309298.

The previous prime is 1245728309261. The next prime is 1245728309351. The reversal of 1245728309299 is 9929038275421.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1245728309299 - 2¹³ = 1245728301107 is a prime.

It is not a weakly prime, because it can be changed into another prime (1245728309209) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 622864154649 + 622864154650.

It is an arithmetic number, because the mean of its divisors is an integer number (622864154650).

Almost surely, 2^{1245728309299} is an apocalyptic number.

1245728309299 is a deficient number, since it is larger than the sum of its proper divisors (1).

1245728309299 is an equidigital number, since it uses as much as digits as its factorization.

1245728309299 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 19595520, while the sum is 61.

The spelling of 1245728309299 in words is "one trillion, two hundred forty-five billion, seven hundred twenty-eight million, three hundred nine thousand, two hundred ninety-nine".