549672546591 has 12 divisors (see below), whose sum is σ = 907395950032. Its totient is φ = 314098598016.

The previous prime is 549672546583. The next prime is 549672546593. The reversal of 549672546591 is 195645276945.

549672546591 is a `hidden beast` number, since 5 + 4 + 9 + 67 + 25 + 465 + 91 = 666.

It is not a de Polignac number, because 549672546591 - 2³ = 549672546583 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (63), and also a Moran number because the ratio is a prime number: 8724961057 = 549672546591 / (5 + 4 + 9 + 6 + 7 + 2 + 5 + 4 + 6 + 5 + 9 + 1).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (549672546593) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4362480466 + ... + 4362480591.

Almost surely, 2^549672546591 is an apocalyptic number.

549672546591 is a deficient number, since it is larger than the sum of its proper divisors (357723403441).

549672546591 is a wasteful number, since it uses less digits than its factorization.

549672546591 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8724961070 (or 8724961067 counting only the distinct ones).

The product of its digits is 81648000, while the sum is 63.

The spelling of 549672546591 in words is "five hundred forty-nine billion, six hundred seventy-two million, five hundred forty-six thousand, five hundred ninety-one".