549115478297 has 4 divisors (see below), whose sum is σ = 568050494820. Its totient is φ = 530180461776.

The previous prime is 549115478203. The next prime is 549115478309. The reversal of 549115478297 is 792874511945.

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 217772488921 + 331342989376 = 466661^2 + 575624^2 .

It is a cyclic number.

It is not a de Polignac number, because 549115478297 - 2¹⁴ = 549115461913 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (549115475297) 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, 9467508218 + ... + 9467508275.

It is an arithmetic number, because the mean of its divisors is an integer number (142012623705).

Almost surely, 2^549115478297 is an apocalyptic number.

It is an amenable number.

549115478297 is a deficient number, since it is larger than the sum of its proper divisors (18935016523).

549115478297 is a wasteful number, since it uses less digits than its factorization.

549115478297 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18935016522.

The product of its digits is 25401600, while the sum is 62.

The spelling of 549115478297 in words is "five hundred forty-nine billion, one hundred fifteen million, four hundred seventy-eight thousand, two hundred ninety-seven".