12897537399211 has 4 divisors (see below), whose sum is σ = 12939548921992. Its totient is φ = 12855525876432.

The previous prime is 12897537399179. The next prime is 12897537399223. The reversal of 12897537399211 is 11299373579821.

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 12897537399211 - 2⁵ = 12897537399179 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12897537399281) 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, 21005760930 + ... + 21005761543.

It is an arithmetic number, because the mean of its divisors is an integer number (3234887230498).

Almost surely, 2^{12897537399211} is an apocalyptic number.

12897537399211 is a deficient number, since it is larger than the sum of its proper divisors (42011522781).

12897537399211 is an equidigital number, since it uses as much as digits as its factorization.

12897537399211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42011522780.

The product of its digits is 51438240, while the sum is 67.

The spelling of 12897537399211 in words is "twelve trillion, eight hundred ninety-seven billion, five hundred thirty-seven million, three hundred ninety-nine thousand, two hundred eleven".