1298098813091 has 4 divisors (see below), whose sum is σ = 1339972968384. Its totient is φ = 1256224657800.

The previous prime is 1298098813069. The next prime is 1298098813111. The reversal of 1298098813091 is 1903188908921.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1298098813091 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1298098813091.

It is not an unprimeable number, because it can be changed into a prime (1298098813001) 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, 20937077600 + ... + 20937077661.

It is an arithmetic number, because the mean of its divisors is an integer number (334993242096).

Almost surely, 2^{1298098813091} is an apocalyptic number.

1298098813091 is a deficient number, since it is larger than the sum of its proper divisors (41874155293).

1298098813091 is an equidigital number, since it uses as much as digits as its factorization.

1298098813091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41874155292.

The product of its (nonzero) digits is 2239488, while the sum is 59.

The spelling of 1298098813091 in words is "one trillion, two hundred ninety-eight billion, ninety-eight million, eight hundred thirteen thousand, ninety-one".