13081378863 has 16 divisors (see below), whose sum is σ = 19935933696. Its totient is φ = 7474172160.

The previous prime is 13081378847. The next prime is 13081378901. The reversal of 13081378863 is 36887318031.

It is not a de Polignac number, because 13081378863 - 2⁴ = 13081378847 is a prime.

It is a super-2 number, since 2×13081378863² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13081378463) 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, 166495 + ... + 232127.

It is an arithmetic number, because the mean of its divisors is an integer number (1245995856).

Almost surely, 2^13081378863 is an apocalyptic number.

13081378863 is a deficient number, since it is larger than the sum of its proper divisors (6854554833).

13081378863 is an equidigital number, since it uses as much as digits as its factorization.

13081378863 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75134.

The product of its (nonzero) digits is 580608, while the sum is 48.

The spelling of 13081378863 in words is "thirteen billion, eighty-one million, three hundred seventy-eight thousand, eight hundred sixty-three".