13097857187 has 4 divisors (see below), whose sum is σ = 13107440016. Its totient is φ = 13088274360.

The previous prime is 13097857169. The next prime is 13097857243. The reversal of 13097857187 is 78175879031.

It is a happy number.

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 13097857187 - 2¹⁴ = 13097840803 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13097857687) 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, 4789364 + ... + 4792097.

It is an arithmetic number, because the mean of its divisors is an integer number (3276860004).

Almost surely, 2^13097857187 is an apocalyptic number.

13097857187 is a deficient number, since it is larger than the sum of its proper divisors (9582829).

13097857187 is an equidigital number, since it uses as much as digits as its factorization.

13097857187 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9582828.

The product of its (nonzero) digits is 2963520, while the sum is 56.

The spelling of 13097857187 in words is "thirteen billion, ninety-seven million, eight hundred fifty-seven thousand, one hundred eighty-seven".