549619713664 has 64 divisors (see below), whose sum is σ = 1324976132160. Its totient is φ = 221695340544.

The previous prime is 549619713661. The next prime is 549619713697. The reversal of 549619713664 is 466317916945.

It is a tau number, because it is divible by the number of its divisors (64).

It is not an unprimeable number, because it can be changed into a prime (549619713661) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18026382 + ... + 18056845.

It is an arithmetic number, because the mean of its divisors is an integer number (20702752065).

Almost surely, 2^549619713664 is an apocalyptic number.

It is an amenable number.

549619713664 is an abundant number, since it is smaller than the sum of its proper divisors (775356418496).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

549619713664 is a wasteful number, since it uses less digits than its factorization.

549619713664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36083265 (or 36083253 counting only the distinct ones).

The product of its digits is 29393280, while the sum is 61.

The spelling of 549619713664 in words is "five hundred forty-nine billion, six hundred nineteen million, seven hundred thirteen thousand, six hundred sixty-four".