13368098521 has 4 divisors (see below), whose sum is σ = 13370721232. Its totient is φ = 13365475812.

The previous prime is 13368098507. The next prime is 13368098533. The reversal of 13368098521 is 12589086331.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 12589086331 = 31277 ⋅402503.

It is a cyclic number.

It is not a de Polignac number, because 13368098521 - 2¹⁷ = 13367967449 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13368098551) 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, 1303695 + ... + 1313908.

It is an arithmetic number, because the mean of its divisors is an integer number (3342680308).

Almost surely, 2^13368098521 is an apocalyptic number.

It is an amenable number.

13368098521 is a deficient number, since it is larger than the sum of its proper divisors (2622711).

13368098521 is an equidigital number, since it uses as much as digits as its factorization.

13368098521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2622710.

The product of its (nonzero) digits is 311040, while the sum is 46.

The spelling of 13368098521 in words is "thirteen billion, three hundred sixty-eight million, ninety-eight thousand, five hundred twenty-one".