547491949920 has 144 divisors (see below), whose sum is σ = 1871734541040. Its totient is φ = 145730737152.

The previous prime is 547491949919. The next prime is 547491949937. The reversal of 547491949920 is 29949194745.

547491949920 is a `hidden beast` number, since 54 + 7 + 4 + 91 + 9 + 499 + 2 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (144).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 440146 + ... + 1135214.

It is an arithmetic number, because the mean of its divisors is an integer number (12998156535).

Almost surely, 2^547491949920 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 547491949920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (935867270520).

547491949920 is an abundant number, since it is smaller than the sum of its proper divisors (1324242591120).

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

547491949920 is a wasteful number, since it uses less digits than its factorization.

547491949920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 695637 (or 695626 counting only the distinct ones).

The product of its (nonzero) digits is 29393280, while the sum is 63.

The spelling of 547491949920 in words is "five hundred forty-seven billion, four hundred ninety-one million, nine hundred forty-nine thousand, nine hundred twenty".