13278051605323 has 16 divisors (see below), whose sum is σ = 14041670049792. Its totient is φ = 12535433352000.

The previous prime is 13278051605309. The next prime is 13278051605333. The reversal of 13278051605323 is 32350615087231.

It is a happy number.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13278051605323 is a prime.

It is not an unprimeable number, because it can be changed into a prime (13278051605303) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17979840 + ... + 18703762.

It is an arithmetic number, because the mean of its divisors is an integer number (877604378112).

Almost surely, 2^{13278051605323} is an apocalyptic number.

13278051605323 is a deficient number, since it is larger than the sum of its proper divisors (763618444469).

13278051605323 is a wasteful number, since it uses less digits than its factorization.

13278051605323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 738426.

The product of its (nonzero) digits is 907200, while the sum is 46.

The spelling of 13278051605323 in words is "thirteen trillion, two hundred seventy-eight billion, fifty-one million, six hundred five thousand, three hundred twenty-three".