13897200007 has 4 divisors (see below), whose sum is σ = 13897700136. Its totient is φ = 13896699880.

The previous prime is 13897199999. The next prime is 13897200041. The reversal of 13897200007 is 70000279831.

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 13897200007 - 2³ = 13897199999 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 (13897200907) 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, 205768 + ... + 264829.

It is an arithmetic number, because the mean of its divisors is an integer number (3474425034).

Almost surely, 2^13897200007 is an apocalyptic number.

13897200007 is a deficient number, since it is larger than the sum of its proper divisors (500129).

13897200007 is an equidigital number, since it uses as much as digits as its factorization.

13897200007 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 500128.

The product of its (nonzero) digits is 21168, while the sum is 37.

Adding to 13897200007 its reverse (70000279831), we get a palindrome (83897479838).

The spelling of 13897200007 in words is "thirteen billion, eight hundred ninety-seven million, two hundred thousand, seven".