13278939713 has 4 divisors (see below), whose sum is σ = 14300396628. Its totient is φ = 12257482800.

The previous prime is 13278939691. The next prime is 13278939719. The reversal of 13278939713 is 31793987231.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 902822209 + 12376117504 = 30047^2 + 111248^2 .

It is a cyclic number.

It is not a de Polignac number, because 13278939713 - 2¹² = 13278935617 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13278939719) 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, 510728438 + ... + 510728463.

It is an arithmetic number, because the mean of its divisors is an integer number (3575099157).

Almost surely, 2^13278939713 is an apocalyptic number.

13278939713 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

13278939713 is a deficient number, since it is larger than the sum of its proper divisors (1021456915).

13278939713 is a wasteful number, since it uses less digits than its factorization.

13278939713 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1021456914.

The product of its digits is 1714608, while the sum is 53.

The spelling of 13278939713 in words is "thirteen billion, two hundred seventy-eight million, nine hundred thirty-nine thousand, seven hundred thirteen".