549364774832640 has 1280 divisors, whose sum is σ = 2172892885954560. Its totient is φ = 130648505057280.

The previous prime is 549364774832639. The next prime is 549364774832659. The reversal of 549364774832640 is 46238477463945.

549364774832640 is a `hidden beast` number, since 5 + 4 + 9 + 36 + 4 + 77 + 483 + 2 + 6 + 40 = 666.

It is a tau number, because it is divible by the number of its divisors (1280).

It is a Harshad number since it is a multiple of its sum of digits (72).

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, 17075319594 + ... + 17075351766.

It is an arithmetic number, because the mean of its divisors is an integer number (1697572567152).

Almost surely, 2^{549364774832640} 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 549364774832640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1086446442977280).

549364774832640 is an abundant number, since it is smaller than the sum of its proper divisors (1623528111121920).

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

549364774832640 is a wasteful number, since it uses less digits than its factorization.

549364774832640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32862 (or 32840 counting only the distinct ones).

The product of its (nonzero) digits is 2926264320, while the sum is 72.

The spelling of 549364774832640 in words is "five hundred forty-nine trillion, three hundred sixty-four billion, seven hundred seventy-four million, eight hundred thirty-two thousand, six hundred forty".