1298098812459 has 4 divisors (see below), whose sum is σ = 1730798416616. Its totient is φ = 865399208304.

The previous prime is 1298098812457. The next prime is 1298098812497. The reversal of 1298098812459 is 9542188908921.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 1298098812459 - 2¹ = 1298098812457 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1298098812459.

It is not an unprimeable number, because it can be changed into a prime (1298098812457) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 216349802074 + ... + 216349802079.

It is an arithmetic number, because the mean of its divisors is an integer number (432699604154).

Almost surely, 2^{1298098812459} is an apocalyptic number.

1298098812459 is a deficient number, since it is larger than the sum of its proper divisors (432699604157).

1298098812459 is an equidigital number, since it uses as much as digits as its factorization.

1298098812459 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 432699604156.

The product of its (nonzero) digits is 29859840, while the sum is 66.

The spelling of 1298098812459 in words is "one trillion, two hundred ninety-eight billion, ninety-eight million, eight hundred twelve thousand, four hundred fifty-nine".