13278021810387 has 8 divisors (see below), whose sum is σ = 17707755479040. Its totient is φ = 8850151341000.

The previous prime is 13278021810371. The next prime is 13278021810419. The reversal of 13278021810387 is 78301812087231.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 13278021810387 - 2⁴ = 13278021810371 is a prime.

It is a super-3 number, since 3×13278021810387³ (a number of 40 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is not an unprimeable number, because it can be changed into a prime (13278021810587) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 465783187 + ... + 465811692.

It is an arithmetic number, because the mean of its divisors is an integer number (2213469434880).

Almost surely, 2^{13278021810387} is an apocalyptic number.

13278021810387 is a deficient number, since it is larger than the sum of its proper divisors (4429733668653).

13278021810387 is an equidigital number, since it uses as much as digits as its factorization.

13278021810387 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 931599633.

The product of its (nonzero) digits is 903168, while the sum is 51.

The spelling of 13278021810387 in words is "thirteen trillion, two hundred seventy-eight billion, twenty-one million, eight hundred ten thousand, three hundred eighty-seven".