549461940049 has 27 divisors (see below), whose sum is σ = 612413744859. Its totient is φ = 492609751920.

The previous prime is 549461940031. The next prime is 549461940059. The reversal of 549461940049 is 940049164945.

The square root of 549461940049 is 741257.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 31735641025 + 517726299024 = 178145^2 + 719532^2 .

It is not a de Polignac number, because 549461940049 - 2¹¹ = 549461938001 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (549461940029) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 644151907 + ... + 644152759.

Almost surely, 2^549461940049 is an apocalyptic number.

549461940049 is the 741257-th square number.

549461940049 is the 370629-th centered octagonal number.

It is an amenable number.

549461940049 is a deficient number, since it is larger than the sum of its proper divisors (62951804810).

549461940049 is an frugal number, since it uses more digits than its factorization.

549461940049 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1886 (or 943 counting only the distinct ones).

The product of its (nonzero) digits is 5598720, while the sum is 55.

The spelling of 549461940049 in words is "five hundred forty-nine billion, four hundred sixty-one million, nine hundred forty thousand, forty-nine".