2257447991713 has 4 divisors (see below), whose sum is σ = 2335291025940. Its totient is φ = 2179604957488.

The previous prime is 2257447991621. The next prime is 2257447991719. The reversal of 2257447991713 is 3171997447522.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 932029983889 + 1325418007824 = 965417^2 + 1151268^2 .

It is a cyclic number.

It is not a de Polignac number, because 2257447991713 - 2²⁵ = 2257414437281 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2257447991719) 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, 38921517070 + ... + 38921517127.

It is an arithmetic number, because the mean of its divisors is an integer number (583822756485).

Almost surely, 2^{2257447991713} is an apocalyptic number.

It is an amenable number.

2257447991713 is a deficient number, since it is larger than the sum of its proper divisors (77843034227).

2257447991713 is an equidigital number, since it uses as much as digits as its factorization.

2257447991713 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77843034226.

The product of its digits is 26671680, while the sum is 61.

The spelling of 2257447991713 in words is "two trillion, two hundred fifty-seven billion, four hundred forty-seven million, nine hundred ninety-one thousand, seven hundred thirteen".