13278144416 has 24 divisors (see below), whose sum is σ = 26847872100. Its totient is φ = 6459637248.

The previous prime is 13278144413. The next prime is 13278144427. The reversal of 13278144416 is 61444187231.

It can be written as a sum of positive squares in 2 ways, for example, as 9678624400 + 3599520016 = 98380^2 + 59996^2 .

It is not an unprimeable number, because it can be changed into a prime (13278144413) 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, 5606141 + ... + 5608508.

Almost surely, 2^13278144416 is an apocalyptic number.

13278144416 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

13278144416 is an abundant number, since it is smaller than the sum of its proper divisors (13569727684).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13278144416 is a wasteful number, since it uses less digits than its factorization.

13278144416 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11214696 (or 11214688 counting only the distinct ones).

The product of its digits is 129024, while the sum is 41.

The spelling of 13278144416 in words is "thirteen billion, two hundred seventy-eight million, one hundred forty-four thousand, four hundred sixteen".