13378111381246 has 16 divisors (see below), whose sum is σ = 20107247984640. Its totient is φ = 6675708494200.

The previous prime is 13378111381177. The next prime is 13378111381247. The reversal of 13378111381246 is 64218311187331.

It is a self number, because there is not a number n which added to its sum of digits gives 13378111381246.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13378111381247) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1234066 + ... + 5317813.

It is an arithmetic number, because the mean of its divisors is an integer number (1256702999040).

Almost surely, 2^{13378111381246} is an apocalyptic number.

13378111381246 is a deficient number, since it is larger than the sum of its proper divisors (6729136603394).

13378111381246 is a wasteful number, since it uses less digits than its factorization.

13378111381246 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6553919.

The product of its digits is 580608, while the sum is 49.

The spelling of 13378111381246 in words is "thirteen trillion, three hundred seventy-eight billion, one hundred eleven million, three hundred eighty-one thousand, two hundred forty-six".