13181402639 has 4 divisors (see below), whose sum is σ = 13249700256. Its totient is φ = 13113105024.

The previous prime is 13181402623. The next prime is 13181402657. The reversal of 13181402639 is 93620418131.

13181402639 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 13181402639 - 2⁴ = 13181402623 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13181402609) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 34148519 + ... + 34148904.

It is an arithmetic number, because the mean of its divisors is an integer number (3312425064).

Almost surely, 2^13181402639 is an apocalyptic number.

13181402639 is a deficient number, since it is larger than the sum of its proper divisors (68297617).

13181402639 is an equidigital number, since it uses as much as digits as its factorization.

13181402639 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68297616.

The product of its (nonzero) digits is 31104, while the sum is 38.

The spelling of 13181402639 in words is "thirteen billion, one hundred eighty-one million, four hundred two thousand, six hundred thirty-nine".