13378226739 has 4 divisors (see below), whose sum is σ = 17837635656. Its totient is φ = 8918817824.

The previous prime is 13378226737. The next prime is 13378226767. The reversal of 13378226739 is 93762287331.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 93762287331 = 3 ⋅31254095777.

It is a cyclic number.

It is not a de Polignac number, because 13378226739 - 2¹ = 13378226737 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 13378226691 and 13378226700.

It is not an unprimeable number, because it can be changed into a prime (13378226737) 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, 2229704454 + ... + 2229704459.

It is an arithmetic number, because the mean of its divisors is an integer number (4459408914).

Almost surely, 2^13378226739 is an apocalyptic number.

13378226739 is a deficient number, since it is larger than the sum of its proper divisors (4459408917).

13378226739 is an equidigital number, since it uses as much as digits as its factorization.

13378226739 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4459408916.

The product of its digits is 2286144, while the sum is 51.

The spelling of 13378226739 in words is "thirteen billion, three hundred seventy-eight million, two hundred twenty-six thousand, seven hundred thirty-nine".