13338797178389 has 4 divisors (see below), whose sum is σ = 13413315598560. Its totient is φ = 13264278758220.

The previous prime is 13338797178347. The next prime is 13338797178439. The reversal of 13338797178389 is 98387179783331.

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.

It is a cyclic number.

It is not a de Polignac number, because 13338797178389 - 2¹⁶ = 13338797112853 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13338797178319) 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, 37259209817 + ... + 37259210174.

It is an arithmetic number, because the mean of its divisors is an integer number (3353328899640).

Almost surely, 2^{13338797178389} is an apocalyptic number.

It is an amenable number.

13338797178389 is a deficient number, since it is larger than the sum of its proper divisors (74518420171).

13338797178389 is an equidigital number, since it uses as much as digits as its factorization.

13338797178389 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74518420170.

The product of its digits is 1152216576, while the sum is 77.

The spelling of 13338797178389 in words is "thirteen trillion, three hundred thirty-eight billion, seven hundred ninety-seven million, one hundred seventy-eight thousand, three hundred eighty-nine".