13479500257 has 4 divisors (see below), whose sum is σ = 13680686896. Its totient is φ = 13278313620.

The previous prime is 13479500249. The next prime is 13479500261. The reversal of 13479500257 is 75200597431.

13479500257 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 a cyclic number.

It is not a de Polignac number, because 13479500257 - 2³ = 13479500249 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13479500227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 100593219 + ... + 100593352.

It is an arithmetic number, because the mean of its divisors is an integer number (3420171724).

Almost surely, 2^13479500257 is an apocalyptic number.

It is an amenable number.

13479500257 is a deficient number, since it is larger than the sum of its proper divisors (201186639).

13479500257 is an equidigital number, since it uses as much as digits as its factorization.

13479500257 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 201186638.

The product of its (nonzero) digits is 264600, while the sum is 43.

The spelling of 13479500257 in words is "thirteen billion, four hundred seventy-nine million, five hundred thousand, two hundred fifty-seven".