13287971797 has 8 divisors (see below), whose sum is σ = 13540589856. Its totient is φ = 13035424272.

The previous prime is 13287971761. The next prime is 13287971819. The reversal of 13287971797 is 79717978231.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 13287971797 - 2²⁷ = 13153754069 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 (13287971747) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 512418 + ... + 537724.

It is an arithmetic number, because the mean of its divisors is an integer number (1692573732).

Almost surely, 2^13287971797 is an apocalyptic number.

It is an amenable number.

13287971797 is a deficient number, since it is larger than the sum of its proper divisors (252618059).

13287971797 is an equidigital number, since it uses as much as digits as its factorization.

13287971797 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35267.

The product of its digits is 9335088, while the sum is 61.

The spelling of 13287971797 in words is "thirteen billion, two hundred eighty-seven million, nine hundred seventy-one thousand, seven hundred ninety-seven".