2742417523217 has 4 divisors (see below), whose sum is σ = 2760823010100. Its totient is φ = 2724012036336.

The previous prime is 2742417523213. The next prime is 2742417523243. The reversal of 2742417523217 is 7123257142472.

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 740203843201 + 2002213680016 = 860351^2 + 1414996^2 .

It is a cyclic number.

It is not a de Polignac number, because 2742417523217 - 2² = 2742417523213 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2742417523213) 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, 9202743218 + ... + 9202743515.

It is an arithmetic number, because the mean of its divisors is an integer number (690205752525).

Almost surely, 2^{2742417523217} is an apocalyptic number.

It is an amenable number.

2742417523217 is a deficient number, since it is larger than the sum of its proper divisors (18405486883).

2742417523217 is a wasteful number, since it uses less digits than its factorization.

2742417523217 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18405486882.

The product of its digits is 1317120, while the sum is 47.

The spelling of 2742417523217 in words is "two trillion, seven hundred forty-two billion, four hundred seventeen million, five hundred twenty-three thousand, two hundred seventeen".