549151616664 has 96 divisors (see below), whose sum is σ = 1699858967040. Its totient is φ = 156890865600.

The previous prime is 549151616633. The next prime is 549151616669. The reversal of 549151616664 is 466616151945.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 549151616664.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (549151616669) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 14481649 + ... + 14519519.

It is an arithmetic number, because the mean of its divisors is an integer number (17706864240).

Almost surely, 2^549151616664 is an apocalyptic number.

It is an amenable number.

549151616664 is an abundant number, since it is smaller than the sum of its proper divisors (1150707350376).

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

549151616664 is a wasteful number, since it uses less digits than its factorization.

549151616664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66661 (or 66654 counting only the distinct ones).

The product of its digits is 4665600, while the sum is 54.

The spelling of 549151616664 in words is "five hundred forty-nine billion, one hundred fifty-one million, six hundred sixteen thousand, six hundred sixty-four".