1298856229579 has 2 divisors, whose sum is σ = 1298856229580. Its totient is φ = 1298856229578.

The previous prime is 1298856229507. The next prime is 1298856229639. The reversal of 1298856229579 is 9759226588921.

It is a strong prime.

It is an emirp because it is prime and its reverse (9759226588921) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1298856229579 - 2⁹ = 1298856229067 is a prime.

It is not a weakly prime, because it can be changed into another prime (1298856223579) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 649428114789 + 649428114790.

It is an arithmetic number, because the mean of its divisors is an integer number (649428114790).

Almost surely, 2^{1298856229579} is an apocalyptic number.

1298856229579 is a deficient number, since it is larger than the sum of its proper divisors (1).

1298856229579 is an equidigital number, since it uses as much as digits as its factorization.

1298856229579 is an evil number, because the sum of its binary digits is even.

The product of its digits is 391910400, while the sum is 73.

The spelling of 1298856229579 in words is "one trillion, two hundred ninety-eight billion, eight hundred fifty-six million, two hundred twenty-nine thousand, five hundred seventy-nine".