13278815278867 has 8 divisors (see below), whose sum is σ = 13709796613632. Its totient is φ = 12852934315200.

The previous prime is 13278815278847. The next prime is 13278815278877. The reversal of 13278815278867 is 76887251887231.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13278815278867 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 13278815278867.

It is not an unprimeable number, because it can be changed into a prime (13278815278847) 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, 1275087484 + ... + 1275097897.

It is an arithmetic number, because the mean of its divisors is an integer number (1713724576704).

Almost surely, 2^{13278815278867} is an apocalyptic number.

13278815278867 is a deficient number, since it is larger than the sum of its proper divisors (430981334765).

13278815278867 is a wasteful number, since it uses less digits than its factorization.

13278815278867 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2550185549.

The product of its digits is 505774080, while the sum is 73.

The spelling of 13278815278867 in words is "thirteen trillion, two hundred seventy-eight billion, eight hundred fifteen million, two hundred seventy-eight thousand, eight hundred sixty-seven".