549771808992 has 768 divisors, whose sum is σ = 1899633254400. Its totient is φ = 135444234240.

The previous prime is 549771808981. The next prime is 549771809003. The reversal of 549771808992 is 299808177945.

It is an interprime number because it is at equal distance from previous prime (549771808981) and next prime (549771809003).

It is a super-2 number, since 2×549771808992² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 1450585059 + ... + 1450585437.

It is an arithmetic number, because the mean of its divisors is an integer number (2473480800).

Almost surely, 2^549771808992 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 549771808992, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (949816627200).

549771808992 is an abundant number, since it is smaller than the sum of its proper divisors (1349861445408).

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

549771808992 is a wasteful number, since it uses less digits than its factorization.

549771808992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 639 (or 631 counting only the distinct ones).

The product of its (nonzero) digits is 91445760, while the sum is 69.

The spelling of 549771808992 in words is "five hundred forty-nine billion, seven hundred seventy-one million, eight hundred eight thousand, nine hundred ninety-two".