549397954560 has 1024 divisors, whose sum is σ = 2206908426240. Its totient is φ = 113623695360.

The previous prime is 549397954559. The next prime is 549397954571. The reversal of 549397954560 is 65459793945.

It is a tau number, because it is divible by the number of its divisors (1024).

It is a super-2 number, since 2×549397954560² (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 549397954491 and 549397954500.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 3175710634 + ... + 3175710806.

It is an arithmetic number, because the mean of its divisors is an integer number (2155184010).

Almost surely, 2^549397954560 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 549397954560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1103454213120).

549397954560 is an abundant number, since it is smaller than the sum of its proper divisors (1657510471680).

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

549397954560 is a wasteful number, since it uses less digits than its factorization.

549397954560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 302 (or 274 counting only the distinct ones).

The product of its (nonzero) digits is 183708000, while the sum is 66.

The spelling of 549397954560 in words is "five hundred forty-nine billion, three hundred ninety-seven million, nine hundred fifty-four thousand, five hundred sixty".