549838747920 has 640 divisors, whose sum is σ = 2267978268672. Its totient is φ = 106677043200.

The previous prime is 549838747897. The next prime is 549838747957. The reversal of 549838747920 is 29747838945.

It is a Harshad number since it is a multiple of its sum of digits (66).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 39891430 + ... + 39905210.

Almost surely, 2^549838747920 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 549838747920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1133989134336).

549838747920 is an abundant number, since it is smaller than the sum of its proper divisors (1718139520752).

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

549838747920 is a wasteful number, since it uses less digits than its factorization.

549838747920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13959 (or 13953 counting only the distinct ones).

The product of its (nonzero) digits is 121927680, while the sum is 66.

The spelling of 549838747920 in words is "five hundred forty-nine billion, eight hundred thirty-eight million, seven hundred forty-seven thousand, nine hundred twenty".