549939179520 has 832 divisors, whose sum is σ = 2029124321280. Its totient is φ = 141203865600.

The previous prime is 549939179519. The next prime is 549939179521. The reversal of 549939179520 is 25971939945.

549939179520 is a `hidden beast` number, since 5 + 4 + 9 + 9 + 39 + 1 + 79 + 520 = 666.

It is an interprime number because it is at equal distance from previous prime (549939179519) and next prime (549939179521).

It is a super-2 number, since 2×549939179520² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (549939179521) by changing a digit.

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 63 ways as a sum of consecutive naturals, for example, 2879262625 + ... + 2879262815.

Almost surely, 2^549939179520 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 549939179520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1014562160640).

549939179520 is an abundant number, since it is smaller than the sum of its proper divisors (1479185141760).

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

549939179520 is a wasteful number, since it uses less digits than its factorization.

549939179520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 397 (or 369 counting only the distinct ones).

The product of its (nonzero) digits is 27556200, while the sum is 63.

The spelling of 549939179520 in words is "five hundred forty-nine billion, nine hundred thirty-nine million, one hundred seventy-nine thousand, five hundred twenty".