13405131398 has 16 divisors (see below), whose sum is σ = 20200649616. Its totient is φ = 6671616000.

The previous prime is 13405131391. The next prime is 13405131437. The reversal of 13405131398 is 89313150431.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13405131391) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 872390 + ... + 887622.

It is an arithmetic number, because the mean of its divisors is an integer number (1262540601).

Almost surely, 2^13405131398 is an apocalyptic number.

13405131398 is a deficient number, since it is larger than the sum of its proper divisors (6795518218).

13405131398 is a wasteful number, since it uses less digits than its factorization.

13405131398 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17239.

The product of its (nonzero) digits is 38880, while the sum is 38.

The spelling of 13405131398 in words is "thirteen billion, four hundred five million, one hundred thirty-one thousand, three hundred ninety-eight".