549265546721 has 4 divisors (see below), whose sum is σ = 573146657472. Its totient is φ = 525384435972.

The previous prime is 549265546637. The next prime is 549265546751. The reversal of 549265546721 is 127645562945.

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 de Polignac number, because none of the positive numbers 2^k-549265546721 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (549265546751) 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, 11940555341 + ... + 11940555386.

It is an arithmetic number, because the mean of its divisors is an integer number (143286664368).

Almost surely, 2^549265546721 is an apocalyptic number.

It is an amenable number.

549265546721 is a deficient number, since it is larger than the sum of its proper divisors (23881110751).

549265546721 is a wasteful number, since it uses less digits than its factorization.

549265546721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23881110750.

The product of its digits is 18144000, while the sum is 56.

The spelling of 549265546721 in words is "five hundred forty-nine billion, two hundred sixty-five million, five hundred forty-six thousand, seven hundred twenty-one".