13191143137 has 4 divisors (see below), whose sum is σ = 13191404740. Its totient is φ = 13190881536.

The previous prime is 13191143131. The next prime is 13191143177. The reversal of 13191143137 is 73134119131.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 73134119131 = 2411 ⋅30333521.

It can be written as a sum of positive squares in 2 ways, for example, as 5155096401 + 8036046736 = 71799^2 + 89644^2 .

It is a cyclic number.

It is not a de Polignac number, because 13191143137 - 2³¹ = 11043659489 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13191143131) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28488 + ... + 164905.

It is an arithmetic number, because the mean of its divisors is an integer number (3297851185).

Almost surely, 2^13191143137 is an apocalyptic number.

It is an amenable number.

13191143137 is a deficient number, since it is larger than the sum of its proper divisors (261603).

13191143137 is an equidigital number, since it uses as much as digits as its factorization.

13191143137 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 261602.

The product of its digits is 6804, while the sum is 34.

The spelling of 13191143137 in words is "thirteen billion, one hundred ninety-one million, one hundred forty-three thousand, one hundred thirty-seven".