13727897049 has 4 divisors (see below), whose sum is σ = 18303862736. Its totient is φ = 9151931364.

The previous prime is 13727897041. The next prime is 13727897107. The reversal of 13727897049 is 94079872731.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 13727897049 - 2³ = 13727897041 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 13727897049.

It is not an unprimeable number, because it can be changed into a prime (13727897041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2287982839 + ... + 2287982844.

It is an arithmetic number, because the mean of its divisors is an integer number (4575965684).

Almost surely, 2^13727897049 is an apocalyptic number.

It is an amenable number.

13727897049 is a deficient number, since it is larger than the sum of its proper divisors (4575965687).

13727897049 is an equidigital number, since it uses as much as digits as its factorization.

13727897049 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4575965686.

The product of its (nonzero) digits is 5334336, while the sum is 57.

The spelling of 13727897049 in words is "thirteen billion, seven hundred twenty-seven million, eight hundred ninety-seven thousand, forty-nine".